Potato Jet my science teacher is a scientist with the opportunity rover. Its cool because there is a club thing where we get to work with nasa with it. However that teacher isn’t very nice and I have been yelled at for doing what I was supposed to be doing a couple times. One specific instance of this was with force vectors. She asked the class how to do them without telling us first. I connected it to vectors which we saw in geometry but I was yelled at to stop doing geometry because this is science. She then explained how to do it and it was geometry... I wouldn’t like to see her on TH-cam tbh.
Has anyone ever tried using this same concept to propell something like a paper airplane? Doesnt necessarily need to be made out of paper because thats flimsy, but i think that would be a fun idea too
When we did this in highschool our speed/acceleration contest was only over a meter, so I just used the mouse trap to catapult my car over the finish line.
@@James-tv2bm Great, I won easily. It was so fast you couldn't really hand time it properly. Of course it rarely landed on its wheels so it wasn't any good over a longer distance.
I think I just found a lifetime hobby. Every science teacher I’ve ever had said I possess an extremely intuitive understanding of physics and this seems to be a perfect application of that. Just seeing this video makes my mind go crazy thinking of all the ways I could attempt to improve the design. I wonder if you could devise an equation that could predictably determine what the optimal ratio of mechanical advantage for a given car would be, accounting for factors like weight, wheel diameter, coefficient of friction on the wheels, axels, and every other moving part where friction is present. Obviously there’s a perfectly optimal car that could be made if you could fully understand all these factors and that’s what is most alluring to me.
My Physic teachers failed me with a 59.6 in high school. I went after school everyday to work on crap because everything was group based. My friend didn't know anything, and stoner girl didn't show up. The workload was added on as the first group finished, so it was impossible to actually keep up. Two years after I graduate I found out he was sleeping with a sophomore girl and was caught and he fled the country....Yeah I wish this guy had been my Physics teacher.
@@notoctoboy5703 No, no, that wasn't what you were supposed to say there, "doesn't" is perfectly grammatically correct in that circumstance. This is how it is a supposed to work in all but one situation. So, unless you think I was writing dialogue for a character from the American south, or colonial era England and forgot my quotation marks, then I will be praying so very piously for your immortal soul you uncultured boar.
I feel this. I just wish I had a physics teacher in high school that didn't play favorites to their special projects group (in this case, the solar bike team). If you were on the team, you got her complete attention, if you weren't then tough cookies read the book and too bad if you don't understand it from reading the chapter.
This was for the mousetrap vehicle event for Science Olympiad. Teams spend forever on designs so that’s why Mark did not show the design the team he was visiting was using. They were actually going to nationals and why would Mark leak a teams design if they’re going to Cornell.
in my 8th grade science class we are actually doing something where you can either build a lander or a rover, no electricity and stuff like that. I had the egg drop thing as an idea for a lander and this for a rover and I'm super excited to test both out and see which one is better.
Hey Mark! Nice Video. I wanted to point out that, at 2:03, mechanical advantage doesn't necessarily equal number of pulleys in all pulley systems. This is because fixed pulleys (pulleys which don't move while the load does) have a mechanical advantage of 1, while movable pulleys (pulleys which do move while the load does) have a mechanical advantage of 2. This is why, in your case, the pulley system had a mechanical advantage of 4: the specific arrangement and positioning of 2 movable and 2 fixed pulleys allowed the system to have a mechanical advantage of 4. However, it is important to note that this doesn't happen to all arrangements of 4 pulleys, as if you were to line up 4 fixed pulleys, you would still get an mechanical advantage of 1, not 4. Thus, you cannot say that mechanical advantage equals number of pulleys in all pulley systems. Instead, you could "split" up the tension along the ropes of a pulley through a diagram. Here's the procedure: you first can imagine that you are holding the end of whatever pulley system you are trying to solve with such a force such that the system is in static equilibrium. Next, you can split the tension caused by the force of the load among the ropes of the pulley system. The key to remember is that each unbroken piece of rope will have uniform tension along it. Finally, you keep splitting the tension all the way until you reach the rope which you are holding. The mechanical advantage of the pulley system will simply be the the load force divided by the effort force, which is simply equal to the tension in that rope you are holding, since the system is in static equilibrium. THAT is the correct way to solve for the mechanical advantage of a pulley system (sorry if I explained it badly). Additionally, I wanted to point out that, at 2:08, mechanical advantage of an inclined plane does not equal the ratio of the length to the height unless the inclined plane is just flat and not inclined, in which case I wouldn't really call it an "inclined" plane. But instead, mechanical advantage of an inclined plane is equal to the ratio of the hypotenuse to the height. This can be derived like this: the load force on the inclined plane is simply equal to its downward force caused by gravity, which is simple equal to f = ma = mg. We can split this force into its x- and y- components, which we can then deduce that the force of the load in the direction parallel to and going down the hypotenuse of the inclined plane is equal to mgsin(theta), in which theta is the angle of the elevation of the inclined plane. This means that, if we were to push the load up on the inclined plane with force mgsin(theta), then the system would achieve static equilibrium. In other words, the load would stay in place. Since we know that mechanical advantage is defined as the ratio of the output force to the input force, that would simply mean that the mechanical advantage of the inclined plane would be mg/mgsin(theta), as mg is the output force in this case and mgsin(theta) is the input force in this case. This simplifies to 1/sin(theta). This is simply equal to the ratio of the hypotenuse to the side opposite angle theta, which in this case is height. Thus, mechanical advantage of an inclined plane is equal to the ratio of the hypotenuse to the height.
you are absolutley correct but remember mark is tying to simplify these things so people with zero knowledge can understad. he would have lost a LOT of people hadd he tried to explain all of that. hence why he ust suggests we do it ourselves
Happy birthday to you and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play
thanks for the heart mark, now i'm finally famous. angie - probably the one where he blew up the ceiling with a bottle. that one was pretty neat. cos he blew stuff up. with a bottle. will - because i have the mind of a third grader
This video is a tutorial for almost all kind of rolling. I mean, it explains drag racing cars tweaks, bicycle gears/wheelsize, etc. Love the video, thx
I think I just found a lifetime hobby. Every science teacher I’ve ever had said I possess an extremely intuitive understanding of physics and this seems to be a perfect application of that. Just seeing this video makes my mind go crazy thinking of all the ways I could attempt to improve the design. I wonder if you could devise an equation that could predictably determine what the optimal ratio of mechanical advantage for a given car would be, accounting for factors like weight, wheel diameter, coefficient of friction on the wheels, axels, and every other moving part where friction is present. Obviously there’s a perfectly optimal car that could be made if you could fully understand all these factors and that’s what is most alluring to me.
YourDudeBk because it is really annoying to many people when someone corrects a small issue, ‘cause it makes them feel like they can’t make mistakes or else they get a red flag. i know many people who hate that.
I never did this as a kid but being an auto mechanic now I got a huge kick out of this video! Made me think about the mathematics of transmissions and differential final drive ratios. Super fun keep up the great work!
Holy cow! Thank you for another amazing video. I have two sons studying engineering at Utah State and we all love your videos. We're going to have to have a family mousetrap car competition. and then AFTER that, I'll show them the video. Keep up the great work.
I remember building one of these in my 8th-grade science class. Once I finished the project, and presented it at school, my father attached Estes Model Rocket Engines to the car.
I first did this project in 1987 during my student teaching in Industrial arts. We used two mouse traps which allowed options on how to best utilize them. I continued this project for the next 12 years as an engineering project in Drafting class. Best run was 437 feet in a 12 foot wide hallway so straight tracking was important. The best wheels were 33rpm vinyl record albums. I didn't invent this project and don't know it's origins.
As always- another fantastic video for the classroom. However, I am not clear on how/why Mark is saying the cars in the video went around 25-30 feet. My 7th graders built cars that have gone over 100'. After watching the video many times, I can count the floor tile in video and determine his cars are going well over 60 feet. Just curious, what am I missing?
UgniusKas yes, I was a physics major for 2 years so i can clarify but I'm not great at getting them excited. They somewhat get it but Mark is very entertaining too.
Are all mouse traps created equal? Do you have to compensate for the differences between your mouse trap and the "standard mouse trap" kept at the Institute des Standards Scientifiques in Paris?
That was my question as well. It seems pretty likely to me that different brands are different enough in stored energy to make the difference between winning and losing here.
They're not. When our class built them in 1986, we were given mousetraps to use. However, due to a mishap during construction, my team's mousetrap got broken, and we had to find a replacement. We ended up buying and trying several different brands and found the springs on some were significantly stronger than others. The weight of different brand mousetraps varied as well. In the end, we went with one that was as close to the original as possible so as to not have an unfair advantage.
It would be difficult since you don't know the exact parameters at play There are several methods to optimize based on limited data and they mostly come down to "smart efficient ways to interpolate between samples then optimizing this interpolated model"
I used this video back in seventh grade over the course of 4 weeks to build a fully optimized (realistically) car. Sadly the pandemic hit and I never got to see how far it went.
I remember building mine out of legos. It impressed my Physics Teacher so much that he asked if he could take pictures of it to use for future examples. I hated him as a person, but I respect him as a teacher.
I watched this video 5 years ago and thought about how fun it would be to make a mousetrap car, and now I'm a highschool junior in an engineering class making one that has to travel at least 60 ft. Ita gonna be fun
Same. This is the optional assignment this quarter that counts as a major grade and my teacher will give out a ton of bonus points for furthest travelled, nicest looking design, etc.
No the videos dumbed down ofc and he has irl examples of the things he talks about and while u may learn something from this its only really a snippet from the broad topic
@@joshuatube6918Pressure = Force / Area Since there was a whole bed of nails, the area was increased, so the pressure was decreased, meaning the nails couldn't puncture the skin.
Was in a high school class that did this in the 1990's. The teacher had two criteria, first to 10' and longest distance traveled. So I had a car with a conical spool on the drive axle, which helps with both good starting acceleration and changing the drive ratio to stretch out the range. So I thought I was clever in trying to score well on both criteria. Turns out I wasn't clever enough... Some other kid in the class found a loophole. At the time the contest didn't stipulate that the mousetrap had to be part of the car, nor did it specify that the car must stay on the ground. So he had one of those Micro Machines toy cars and used the mousetrap to catapult it down the hallway. It flew about half the distance before bouncing off some lockers and skidding to the end of the hall. Thus insta-winning both categories, even if it wasn't in a way that was the intended nature of the contest. The teacher allowed that because he considered it fair given the provided rules, but changed the rules for the next class that did this project so no easy cheats could happen. I can only laugh about it though, since I was on friendly terms with the kid that beat my design. Nobody was allowed to copy each other, so I was wondering what strategy he had that would beat mine and I thought he was joking about it. (He wasn't wrong.) So what about my car? It ended up 4th in distance and 2nd on speed. Didn't have access to fancy bearings like others did for the distance, and only got the speed because everyone else trying for it spun their tires on the polished floor. However it did get awarded the most interesting design for having a novel approach compared to others. Everyone else thought the overall win strategy was too cheesy too.
I tried to do that loophole because my teacher had only listed that the rules were the mousetrap car was solely powered by a moustrap. He was mean and changed the rules for this 2 days before the project was due.
the Term savage is used as kind of like a meme type thing nowadays but it just means that someone doing an act which isn’t very brutal but if seen in a different angle can still be considered as brutal,thus the term savage
I made one in middle school using just the mousetrap for the body and I glued the string to the rear axle. It was exactly long enough to go the minimum distance required for the project before it caught itself and caused the car to do a sweet drift and stop right on the line
I love these videos were you dwelve into something seen as relatively simple but you dive into every detail and explain it which makes it very interesting and educational
Me: has to make a mousetrap car for school. My friend: “oh look Mark Rober made a video about it” Me: “now, this is our little secret no one else needs to know. We will win”
I didn’t watch it all the way through when I was making my car with my partner cuz I thought he was just some random guy. But I’ve got like 12 meters so yay!
I'm with his nieces and nephews on this, Mark Rober said he would be using ONLY his pinkies, but used his pinkies and a jack. But I think it was scripted from the ice cream cone being knocked. Still hilarious and still love this guy
It wasn't the fact that he used a jack, it was the fact that he didn't get the entire car off the ground. He said he could get the car off the ground but the car was still on the ground. Only part of the car was off the ground. If you say you can get something off the ground and you only get part of it off the ground, you didn't really get it off the ground. Lol
the longer lever arm also increased the amount of string pulled, and the smaller of the ratio of axle to wheel makes the rotations let the car go further
Oh sorry, Mark! I forgot about the NASA video, but really I meant a “physics” video where you explain the physics behind stuff like these mouse trap cars ;)
Mark you are seriously such a massive inspiration to me. I take all the science classes at my school and I have shown your videos to my physics teacher which she really liked! You are an amazing person whom I would bet 1 million dollars on could be an amazing teacher too(you already are here on youtube)
MY brother did this in bowling once! Except he doesn't pay attention in physics. He would push the ball with little to no force down the center of the alley. The ball would take extremely long to get there but it would get a strike down the middle the majority of the time!
The internet needs more people like Mark Rober. TH-cam should give incentives for NASA employees to become creators.
Potato Jet my science teacher is a scientist with the opportunity rover. Its cool because there is a club thing where we get to work with nasa with it. However that teacher isn’t very nice and I have been yelled at for doing what I was supposed to be doing a couple times. One specific instance of this was with force vectors. She asked the class how to do them without telling us first. I connected it to vectors which we saw in geometry but I was yelled at to stop doing geometry because this is science. She then explained how to do it and it was geometry... I wouldn’t like to see her on TH-cam tbh.
NASA employees should stick to being important
Pasgh ikhami getting to Mars is important but following your passion and having a life is also important
Has anyone ever tried using this same concept to propell something like a paper airplane? Doesnt necessarily need to be made out of paper because thats flimsy, but i think that would be a fun idea too
Not all NASA employees are like him they are mostly old
When we did this in highschool our speed/acceleration contest was only over a meter, so I just used the mouse trap to catapult my car over the finish line.
Modern problems require ancient solutions
*yeet*
How’d that work for you
@@James-tv2bm Great, I won easily. It was so fast you couldn't really hand time it properly. Of course it rarely landed on its wheels so it wasn't any good over a longer distance.
That's actually smart
The way Mark explains physics is not only easier to understand than school ever taught me but he makes it so much more interesting
chicken nuggets
Yes exactly
@@rockhopper6316 What scares me is "go dominate the competition" means you won by like 1.5 mm
@@JupiterKnight chicken numgies
@@wren7195 yea lol
I think I just found a lifetime hobby. Every science teacher I’ve ever had said I possess an extremely intuitive understanding of physics and this seems to be a perfect application of that. Just seeing this video makes my mind go crazy thinking of all the ways I could attempt to improve the design. I wonder if you could devise an equation that could predictably determine what the optimal ratio of mechanical advantage for a given car would be, accounting for factors like weight, wheel diameter, coefficient of friction on the wheels, axels, and every other moving part where friction is present. Obviously there’s a perfectly optimal car that could be made if you could fully understand all these factors and that’s what is most alluring to me.
Hey! That's me at 12:50 ! Super cool to see a Science Olympiad event highlighted on your channel! It was great to meet you and talk about my car.
Seriously
SCIOLY IS LIFE
Sweet! Congratz!
just finished my SCOILY event at 4:00
>TFW States is already over
I didn't work on my teams mousetrap. I did 3D print the bearing mounts though. I think it actually got first at states.
I wish Mark was my physics teacher...
That would be amazing class would never be boring
You and everyone else. Move to Denver Mark
I know!
My Physic teachers failed me with a 59.6 in high school. I went after school everyday to work on crap because everything was group based. My friend didn't know anything, and stoner girl didn't show up. The workload was added on as the first group finished, so it was impossible to actually keep up. Two years after I graduate I found out he was sleeping with a sophomore girl and was caught and he fled the country....Yeah I wish this guy had been my Physics teacher.
@@neb4587 I couldn't get full credit because I didn't have group members to finish their stuff. Yeah he was a creep.
When mr. Rober is a physics teacher to almost 10 million people and doesn't realize it.
On-Plot-Point physics, engineering, math, science, medical information, problem solving, and FUN!!!
@flowazx 10.3 mil
@@salteds0cks 10.4 mil
*don't
@@notoctoboy5703 No, no, that wasn't what you were supposed to say there, "doesn't" is perfectly grammatically correct in that circumstance. This is how it is a supposed to work in all but one situation. So, unless you think I was writing dialogue for a character from the American south, or colonial era England and forgot my quotation marks, then I will be praying so very piously for your immortal soul you uncultured boar.
Can you imagine how lucky some future kid is gonna be to be able to call Mark Rober their physics teacher??
omg now thats something mind blowing
yes,I wish we could study again
Could you imagine the school board looking at what he would want to do? Lol
@@chriswilliamson806 so today we’re gonna catapult an entire cafeteria
Well we can also call him our physics teacher too. Just for us he teaches us here on TH-cam as oppose to a classroom.
“Thank yo-“
Niece: ** *Slaps Ice Cream* **
“O WOAAH”
so rude
Trenity R salty slap
that was cringe
@@SalixSucksAtEverything it was scripted, you can see they love him
@@rapiintheskyy3585 it was part of the joke, much like your continued existence
I learned more in the first 5 minutes than a whole semester in high school
Sad but tru
Maybe short term, but learning is (or should be) based on retained understanding and application.
Mary Lawrence yeah you are right but you can re watch the video
I feel this. I just wish I had a physics teacher in high school that didn't play favorites to their special projects group (in this case, the solar bike team). If you were on the team, you got her complete attention, if you weren't then tough cookies read the book and too bad if you don't understand it from reading the chapter.
@@avitus2 If you have a teacher that has favorites, that sucks.
Breaking news:
Worker in NASA go to school to totally annihilate kids in mousetrap car race
Yuen Kik Li former
Correction: Former Worker at NASA went to a school to totally annihilate kids -in mousetrap car race-
This was for the mousetrap vehicle event for Science Olympiad. Teams spend forever on designs so that’s why Mark did not show the design the team he was visiting was using. They were actually going to nationals and why would Mark leak a teams design if they’re going to Cornell.
lol
It’s almost 2022 and I’m still enjoying this video, I mean the way Mark explains engineering is so amazing.
yes ikr he also inspired me to make a montage in my video
Welcome to Joseph's nightmare
It's almost 2023 and I'm still enjoying this video, I mean the way Mark explains engineering is so amazing.
its already 2023 for me
Hello its 2024 buddy wake u0
- Dad, why is my sister called Rose?
- Because your mother loves flowers.
- Oh ok, thanks dad..
- No problem, Mechanical Advantage.
*D E L E T E T H I S C O M M E N T*
@@BlitzBodyBeats Why
@@WarmongerSlays some man want to watch the world burn
No problem. *communism*
EEE EEE no problem democracy
Me: This is boring, I can’t wait till schools out
*Schools out*
Me:*watches educational videos for fun*
Learning is never over.
Hey thats me
Same bro I watch them all the time
This is me I used to just binge watch every large educational channel, then I stopped and now I'm finally getting back into it
Yea in quarantine I'm out of school but I wish I was in it
I wish we did something cool like this when I was in school... good job on the video! :)
We didn't even have a science fair at my school.
I was supposed to do mouse trap cars but my school canceled it.
Experimental Fun I hate u
why do you hate me?
Experimental Fun yep same
this has sat in my brain for 3 years and has silently been supporting me through my physics classes. Thank you.
Silent support from mark
Press F to pay respects to icecream
Jayden Games bruh im eating some rn 😂😂
Uhhh, im on phone....
🙄
F
F
@@Naat.ee12 just press reply then SIMPLY press f :)
Mark: "A little bit of water spills out every time"
Also mark: *Purposely misses cup*
He is Like realy Bad at pouring
@The Demon Under Your Bed • 3 years ago thx
you should see liam thompson pour liquid
Mark: Talks like a smart person
Me: I don't know what you're talking about, but it seems interesting
the winning model is the one where the mousetrap lever activates a electric motor...
no one is talking about how mark was outside IN THE RAIN for a bit just so he can explain the topic he was on. I want him to be my teacher.
you would be a GREAT science or tech ed teacher
Or a physics teacher
Gavin D'Souza no search anonymous
Oh I'm a anonymous member too
@@Vertense do you even know anonymous?
Hi
I laughed so hard when your niece knocked the ice-cream out of your hand.
DarthBil1 IKR LOL
Ows talaga ba?
Same
@@Vic_Inso filipino?
Wait when?
Mark: “I want to be a physics teacher later on”
Every subscribers: ^ *has been learning from him since the beginning* ^ 👀
Naruto X Hinata k
in my 8th grade science class we are actually doing something where you can either build a lander or a rover, no electricity and stuff like that. I had the egg drop thing as an idea for a lander and this for a rover and I'm super excited to test both out and see which one is better.
So what happened
i dont watch because its relevant, i watch because its entertaining...
True
me to
Same
I agree with you
JoeSloppyJoe I watch it for both
i was expecting a mouse trap that catches a mouse and drives away with it
Whisper voice: lol, me too!
Same
Hit & Run
Same
Ha
1:36
Mark: But I could lift 10lbs 50 times.
*Uses a 12 pound weight*
Also said his car weighed 500 lbs soooooo
YoYO Semite which is my point, the weight was also an example to keep math simple
@@zestymushr00m85 it was only one corner of the car being lifted. Which he estimated at 500 pounds
Guys he was just giving an example🙃🙃 I’m agreeing with Jonathan Huang just using the car weight example
YoYO Semite what, where’s the acceleration? You have distance.
Hey Mark! Nice Video.
I wanted to point out that, at 2:03, mechanical advantage doesn't necessarily equal number of pulleys in all pulley systems. This is because fixed pulleys (pulleys which don't move while the load does) have a mechanical advantage of 1, while movable pulleys (pulleys which do move while the load does) have a mechanical advantage of 2. This is why, in your case, the pulley system had a mechanical advantage of 4: the specific arrangement and positioning of 2 movable and 2 fixed pulleys allowed the system to have a mechanical advantage of 4. However, it is important to note that this doesn't happen to all arrangements of 4 pulleys, as if you were to line up 4 fixed pulleys, you would still get an mechanical advantage of 1, not 4. Thus, you cannot say that mechanical advantage equals number of pulleys in all pulley systems. Instead, you could "split" up the tension along the ropes of a pulley through a diagram. Here's the procedure: you first can imagine that you are holding the end of whatever pulley system you are trying to solve with such a force such that the system is in static equilibrium. Next, you can split the tension caused by the force of the load among the ropes of the pulley system. The key to remember is that each unbroken piece of rope will have uniform tension along it. Finally, you keep splitting the tension all the way until you reach the rope which you are holding. The mechanical advantage of the pulley system will simply be the the load force divided by the effort force, which is simply equal to the tension in that rope you are holding, since the system is in static equilibrium. THAT is the correct way to solve for the mechanical advantage of a pulley system (sorry if I explained it badly).
Additionally, I wanted to point out that, at 2:08, mechanical advantage of an inclined plane does not equal the ratio of the length to the height unless the inclined plane is just flat and not inclined, in which case I wouldn't really call it an "inclined" plane. But instead, mechanical advantage of an inclined plane is equal to the ratio of the hypotenuse to the height. This can be derived like this: the load force on the inclined plane is simply equal to its downward force caused by gravity, which is simple equal to f = ma = mg. We can split this force into its x- and y- components, which we can then deduce that the force of the load in the direction parallel to and going down the hypotenuse of the inclined plane is equal to mgsin(theta), in which theta is the angle of the elevation of the inclined plane. This means that, if we were to push the load up on the inclined plane with force mgsin(theta), then the system would achieve static equilibrium. In other words, the load would stay in place. Since we know that mechanical advantage is defined as the ratio of the output force to the input force, that would simply mean that the mechanical advantage of the inclined plane would be mg/mgsin(theta), as mg is the output force in this case and mgsin(theta) is the input force in this case. This simplifies to 1/sin(theta). This is simply equal to the ratio of the hypotenuse to the side opposite angle theta, which in this case is height. Thus, mechanical advantage of an inclined plane is equal to the ratio of the hypotenuse to the height.
I’m to lazy to read gib a summary
you are absolutley correct but remember mark is tying to simplify these things so people with zero knowledge can understad.
he would have lost a LOT of people hadd he tried to explain all of that. hence why he ust suggests we do it ourselves
@@FluffyDragonDrawing summary cool waited awhile
If he was my physics teacher I would skip other classes to go to his class
Future Fire ikr
Same
Future Fire he’s my teacher😂
Same
Same
When you learn more in a 15min video then in 13 years school
true
Exactly
*than. Now you’ve got some grammar too 😜
fck yeah
Happy birthday to you and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play a game because I am BORED and I really want to play
Lesson of the day: don't make a bet with mark
Yes that is so true
You’re really correct
Im just doing this so it Will look like People comment
: )
You welcome Eva Slyva
Congratulations Mark on 60 million
al is my current physics teacher, ama.
What is your favorite demo so far
thanks for the heart mark, now i'm finally famous.
angie - probably the one where he blew up the ceiling with a bottle. that one was pretty neat. cos he blew stuff up. with a bottle.
will - because i have the mind of a third grader
best teacher ever or what???
Did you ever get the „Hammertreatment“?
do you like bread?
This video is a tutorial for almost all kind of rolling. I mean, it explains drag racing cars tweaks, bicycle gears/wheelsize, etc.
Love the video, thx
Can you believe I had to watch my favorite youtuber for homework on my Mouse trap car?? :O
megamaz dang bro really
Me too lol
K
The way he explained physics is so much better then the 9 years of science class I've taken
nerd!
Somebody: Creates a contest that's a thing just in the USA.
USA: Yay, World Record!
;-)
It's like the miss universe thing, hardly any competition when it's just earth
Somebody: Creates a contest that's a thing just in the USA.
USA: Yay, World Record!
;-)
Yeah. The rest of the world just doesn’t show up to compete.
He deserves more. He literally travels soo far for just a video!😸
no crap he deserves more
Yep.
Hmmmm, you heard of Nick Robinson?
Yes
He also takes like months sometimes
The ice cream cone slap was the funniest thing I’ve seen in awhile.
I think I just found a lifetime hobby. Every science teacher I’ve ever had said I possess an extremely intuitive understanding of physics and this seems to be a perfect application of that. Just seeing this video makes my mind go crazy thinking of all the ways I could attempt to improve the design. I wonder if you could devise an equation that could predictably determine what the optimal ratio of mechanical advantage for a given car would be, accounting for factors like weight, wheel diameter, coefficient of friction on the wheels, axels, and every other moving part where friction is present. Obviously there’s a perfectly optimal car that could be made if you could fully understand all these factors and that’s what is most alluring to me.
Nobody:
Mark:
Dang it I wanted to be a physics teacher but I ended up working at nasa
Lolol definitely
Aw I wanted to be a millionare not a billionare
@DrewZull Káędîij NASA* but yeah
YourDudeBk because it is really annoying to many people when someone corrects a small issue, ‘cause it makes them feel like they can’t make mistakes or else they get a red flag. i know many people who hate that.
@@GrandpaPapi werent you the one that corrected first?
and who called someone a nerd?
13:30 this is how happy I imagine Mark is *ALL THE TIME* when he's learning, making, and teaching! Keep up the great work!
Hub Han
Great minds think alike.
I saw that and thought the very same thing as you did.
I wish I had as great a mind as Mark.
Mark: Talks like a smart person
Me: I don't know what you're talking about, but it seems interesting
True
shungite
@@pizzx824 J O I N
U S
@@nwiiho SHUNGITE
Same man I feel you
I never did this as a kid but being an auto mechanic now I got a huge kick out of this video! Made me think about the mathematics of transmissions and differential final drive ratios. Super fun keep up the great work!
I love what you do and patiently wait for each video.Thank you for making me and my family smarter and more interested in science.
.
Holy cow! Thank you for another amazing video. I have two sons studying engineering at Utah State and we all love your videos. We're going to have to have a family mousetrap car competition. and then AFTER that, I'll show them the video. Keep up the great work.
I remember building one of these in my 8th-grade science class. Once I finished the project, and presented it at school, my father attached Estes Model Rocket Engines to the car.
Please tell what supplies you got for the car need help for my science project
I first did this project in 1987 during my student teaching in Industrial arts. We used two mouse traps which allowed options on how to best utilize them. I continued this project for the next 12 years as an engineering project in Drafting class. Best run was 437 feet in a 12 foot wide hallway so straight tracking was important. The best wheels were 33rpm vinyl record albums. I didn't invent this project and don't know it's origins.
My friend built a mousetrap car and it exploded when he tested it in competition
A.D.E 35 oh my hahahahaha
Wtf did he make it with?
wilag8er I think he meant like the spring broke and destroyed the car
Your picture makes this comment better
A.D.E 35 wow
Mark: Talking about Mechanical advantages
Weather: RAIN!
Mark: Keeps talking!
Yes
I'm never going to let Mark pour me a glass of tea.
A robot to support robot to give you the part that will attach to a robot that will pour you a tea
As always- another fantastic video for the classroom. However, I am not clear on how/why Mark is saying the cars in the video went around 25-30 feet. My 7th graders built cars that have gone over 100'. After watching the video many times, I can count the floor tile in video and determine his cars are going well over 60 feet. Just curious, what am I missing?
Jokes on you, I'm part of the 3.3% of people who have a school project on this
Oh lord tachanka, we are not worthy for your existence
Lucky
TheCringyGamer _
0.3%*
he said 99.7%
Same
He said 99.7% of people don't do this in their lifetime, so 0.3% of people do this in their lifetime.
All I said was "new Mark Rober video" and the 5 yr old and 9 yr old came a-runnin' :) We love science in this house.
UgniusKas ja 💀
UgniusKas yes, I was a physics major for 2 years so i can clarify but I'm not great at getting them excited. They somewhat get it but Mark is very entertaining too.
Nice wip
Mr. mouse is getting all the honeys in his car
Do your thing Mr. mouse
Are all mouse traps created equal? Do you have to compensate for the differences between your mouse trap and the "standard mouse trap" kept at the Institute des Standards Scientifiques in Paris?
That was my question as well. It seems pretty likely to me that different brands are different enough in stored energy to make the difference between winning and losing here.
hm... if it is like that, one would just have to find a Mouse trap, with the energy of a Rat trap and win everytime lmao
True we don't know💁
Awesome thought
They're not. When our class built them in 1986, we were given mousetraps to use. However, due to a mishap during construction, my team's mousetrap got broken, and we had to find a replacement. We ended up buying and trying several different brands and found the springs on some were significantly stronger than others. The weight of different brand mousetraps varied as well. In the end, we went with one that was as close to the original as possible so as to not have an unfair advantage.
If this is an optimization problem, could you use calculus to find the ideal ratios to reach a certain distance?
It would be difficult since you don't know the exact parameters at play
There are several methods to optimize based on limited data and they mostly come down to "smart efficient ways to interpolate between samples then optimizing this interpolated model"
Can we get a R.I.P in the chat for Mark's ice cream
RIP
RIP
Rest in peace
RIP
Rip
The street fighter transition at 4:27 is amazing.
Thank you for putting in that extra effort into your videos!
I look forward to working with you! We’re going to have so much fun!
Rick Smith, Jr. spoiler alert?
I
??
I used this video back in seventh grade over the course of 4 weeks to build a fully optimized (realistically) car. Sadly the pandemic hit and I never got to see how far it went.
I remember building mine out of legos. It impressed my Physics Teacher so much that he asked if he could take pictures of it to use for future examples.
I hated him as a person, but I respect him as a teacher.
Wow.
Impressive.
Well that took an unexpected turn at the end, dang 😂😂
"I can lift 10 pounds 50 times" *has a 12 pound weight*
same thing different number
Lol
Huh
I saw that too! lol
Looks like it says 14 not 12
I WOULD SAY THAT I WISH YOU WERE MY PHYSICS TEACHER
BUT MY PHYSICS TEACHER WAS ALSO SICK
AFaysE _7 that’s too bad, I hope he/she gets better soon! 🤓
Grant Hester gg man well played
AFaysE _7 LOL
You know everyday would be this kind of stuff
He IS your physics teacher. He's teaching you physics.
*mind blown*
I watched this video 5 years ago and thought about how fun it would be to make a mousetrap car, and now I'm a highschool junior in an engineering class making one that has to travel at least 60 ft. Ita gonna be fun
i just love how she punches the icecream out of marks hand
questacon 😇
More of a slap but......
Nice video! And that icecream slap was hilarious! Perfect editing.
1:44
Mark:blah blah blah
Rain:my time has come
The fact that I saw this video when it came out and just today I was assigned to make a mousetrap car in my high school physics class.
Same. This is the optional assignment this quarter that counts as a major grade and my teacher will give out a ton of bonus points for furthest travelled, nicest looking design, etc.
@@samuelgunter Its not optional for me but im sure our assignments are very similar regarding the rules and such
Me in class trying to understand something simple in class: wait what where WHY?
ME on TH-cam understanding something really complicated: oh ok I see
All Mark's videos be like
It’s because mark won’t be quizzing us lol
Ok explain it to me
No the videos dumbed down ofc and he has irl examples of the things he talks about and while u may learn something from this its only really a snippet from the broad topic
So you can now compute for mechanical advantage just by watching this video? Or do you just feel like you learned something....
“ I made him show me all his cool demos”
4:50
“And that’s how I died”
IDK how he didn't die
You'll learn in high school lmao
JoshuaTube the pressure was super spread out
@@joshuatube6918Pressure = Force / Area
Since there was a whole bed of nails, the area was increased, so the pressure was decreased, meaning the nails couldn't puncture the skin.
i actually lol when the girl slapped the ice cream out of marks hand
John Made it same
Lol
Meg from family guy
@Joseph Park Thanks for the karma
Mark deserved it. Karma🤣🤣
I would take Mark as my Physics teacher any day.
Me: Not knowing what he’s talking about but still enjoying the video
Same😂
Same
same🤣
He is basically teaching torque
And basically gear ratio
Was in a high school class that did this in the 1990's. The teacher had two criteria, first to 10' and longest distance traveled. So I had a car with a conical spool on the drive axle, which helps with both good starting acceleration and changing the drive ratio to stretch out the range. So I thought I was clever in trying to score well on both criteria.
Turns out I wasn't clever enough...
Some other kid in the class found a loophole. At the time the contest didn't stipulate that the mousetrap had to be part of the car, nor did it specify that the car must stay on the ground. So he had one of those Micro Machines toy cars and used the mousetrap to catapult it down the hallway. It flew about half the distance before bouncing off some lockers and skidding to the end of the hall. Thus insta-winning both categories, even if it wasn't in a way that was the intended nature of the contest.
The teacher allowed that because he considered it fair given the provided rules, but changed the rules for the next class that did this project so no easy cheats could happen.
I can only laugh about it though, since I was on friendly terms with the kid that beat my design. Nobody was allowed to copy each other, so I was wondering what strategy he had that would beat mine and I thought he was joking about it. (He wasn't wrong.)
So what about my car? It ended up 4th in distance and 2nd on speed. Didn't have access to fancy bearings like others did for the distance, and only got the speed because everyone else trying for it spun their tires on the polished floor. However it did get awarded the most interesting design for having a novel approach compared to others. Everyone else thought the overall win strategy was too cheesy too.
I wish my school did things like this
absolute GENIUS
same
Kaden Furr I did this in 7th grade
I tried to do that loophole because my teacher had only listed that the rules were the mousetrap car was solely powered by a moustrap. He was mean and changed the rules for this 2 days before the project was due.
1:25 Dang, dat gurl is savage..
Edit: OMG Thank you soooo much for all the likes
SHE'S ONLY 15 YOU DISGUSTING MAN
Sergeant Hale u do know what savage is right
Don't like your own comment.
ALSO I KNOW WHAT I AM TALKING ABOUT. DON'T TRY TURNING THE TABLES YOUNG MAN.
the Term savage is used as kind of like a meme type thing nowadays but it just means that someone doing an act which isn’t very brutal but if seen in a different angle can still be considered as brutal,thus the term savage
@@benandrews7403 how is that disgusting?
1:43
my guy literally standing in the rain for science.... +1 respect
"I could move the earth if I had a lever strong and long enough" -Archimedes (supposedly)
That lever would have to be 3 light-years long but yeah
@@aidanbeattie8341 lol yea
@@aidanbeattie8341 well better get building
And a place to stand*
@@mrugankthatte4378 yes
I made one in middle school using just the mousetrap for the body and I glued the string to the rear axle. It was exactly long enough to go the minimum distance required for the project before it caught itself and caused the car to do a sweet drift and stop right on the line
scioly?
Can we just take a moment to appreciate the fact that Mark stood outside while it was sprinkling/raining all for a video for us...👏🏼👏🏼👏🏼❤️
whatever child gets him as a teacher I want you to know you are the luckiest person I've ever known
You are actually the best my man
I love these videos were you dwelve into something seen as relatively simple but you dive into every detail and explain it which makes it very interesting and educational
1:26 I bet that’s not helping your quest to be the greatest uncle!
Mark Rober, im making it, the current best for my school is 33 feet, thanks mark, we will win
I’ve learned something new that I will probably never use
Basically Yes isn’t that what you call school?
Big Brain
And thats school!
School but without extra steps
you can use the principles every time you drive your car or ride a bicycle.
If he was a teacher at my high school I would never leave the class
Or fail
@@MJaneth no i would fail so i would have him again
Bruh so u skip wooowwwwww
@@tychus7 that's not a good thing
Ditto
mark: thank yo-
nephew: *slaps icecream*
SALTY!!!!!
FATALITY
@@blazingbattles2998 No it’s sweet
um that was his niece that slapped it
@@LittleCheetahCub i don't like braniacks correcting me.
I’ll be honest I did not come to this video expecting to laugh but when she slapped the iced cream out of his hand I lost it
bee boi but of course
A) it surprised me which was the whole intention of that comment and that is why I laughed
B) I’m in college
bee boi you're problably 12 if you commented that someone else is probably 12... o wait + ded memes
how are all the strings attached with the pulley?
Me: has to make a mousetrap car for school.
My friend: “oh look Mark Rober made a video about it”
Me: “now, this is our little secret no one else needs to know. We will win”
Hahaha
Sameeee :))
I didn’t watch it all the way through when I was making my car with my partner cuz I thought he was just some random guy. But I’ve got like 12 meters so yay!
My car didnt move an inch
Did u?
1:00 trolls his nieces and nephews so bad 😂😂😂
I laughed so god damn hard when his niece smacked the ice cream cone out of his hand 😂
I'm with his nieces and nephews on this, Mark Rober said he would be using ONLY his pinkies, but used his pinkies and a jack.
But I think it was scripted from the ice cream cone being knocked. Still hilarious and still love this guy
Boost And Redline I agree
It wasn't the fact that he used a jack, it was the fact that he didn't get the entire car off the ground. He said he could get the car off the ground but the car was still on the ground. Only part of the car was off the ground. If you say you can get something off the ground and you only get part of it off the ground, you didn't really get it off the ground. Lol
applause the cleaver troll!
Me: Watches this *educational* video instead of virtual learning. “I learned a lot today” which would be true
the longer lever arm also increased the amount of string pulled, and the smaller of the ratio of axle to wheel makes the rotations let the car go further
Well Mark, I’ve been waiting for a little over 2 months now..
So I hope(as usual) that this video is amazing just like all the other videos you make
Oh sorry, Mark! I forgot about the NASA video, but really I meant a “physics” video where you explain the physics behind stuff like these mouse trap cars ;)
Mark you are seriously such a massive inspiration to me. I take all the science classes at my school and I have shown your videos to my physics teacher which she really liked!
You are an amazing person whom I would bet 1 million dollars on could be an amazing teacher too(you already are here on youtube)
You finally uploaded
As a science nerd I love your content
IKR
Yaaass
Quality content takes time.
Yaaah
jlaj mousey nerd is the correct term.
I’m not in high school but I already love physics just from watching you
I’m in primary
We were assigned to watch this in our science class today
Amazing decision
I could have sworn that intro was my high school, then I saw my old physics teacher, favorite teacher in all my time in school!
really doubt it
I'm 12 and don't understand most of what you're talking about, but your videos really entertain me.
Abby H wow... me too lol
MY brother did this in bowling once! Except he doesn't pay attention in physics. He would push the ball with little to no force down the center of the alley. The ball would take extremely long to get there but it would get a strike down the middle the majority of the time!