Single and compound pulleys review - lifting our principal // Homemade Science with Bruce Yeany
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- เผยแพร่เมื่อ 31 พ.ค. 2024
- Students have a better understanding when they actually try various pulley systems for themselves, especially when they get to try and lift each other. The biggest challenge is to see how many students it takes to lift our school principal using a single fixed pulley and then a series of compound pulleys. Is it possible to lift yourself using a set of pulleys? Our principal finds out.
Thanks from this 65 year old elementary school student. This is the kind of lesson your students will remember for a lifetime. Visual, fun, memorable. My high school physics teacher told us after a few weeks of teaching us: "A little knowledge is a dangerous thing - you guys have nothing to worry about".
I wish I had a teacher like you
take complete ownership of your results,& u won't have to wish for a teacher like that.
@@thewarlordscalling6537 Wow. Ok then.
he is my teacher
I wonder how many students you've inspired over the years to pursue a love of learning and exploration. Great work and thanks for doing what you do.
medicineman007 Hi Medicineman007, thanks for the support. That's a good question and I have no idea. My goal has always been to let students see and experience some of the concepts of science for themselves, after that I can only hope that the interest grows. This will be my 39th year of teaching and I still love it.
jjjjj
mmm kay
Great teacher! You can tell the students like and respect him. They are taking an interest in it too
You are an awesome teacher. The world needs more educators like you. Congrats
+Gusecua thank you Gusecua, I love what I do.
My daughter is 15... 10th grade. I wish she had teachers like you. You really impact lives and give them hands on learning that they will remember forever. When you make learning fun, you make it memorable. Thank you for what you do.
I am Indian...
❤️❤️
I like this system to study..
Really it show the students practically...
Thank you sir .
To see the video , the students have clear concept of pully systems. 😊
I’m 21 years old, watching this video more amazed then half of your students, JAW ON THE FLOOR.
Awesome and engaging lesson for your students. You are the kind of teacher kids remember their entire lives. Great job seizing on the opportunity to explain the 7:1
Physics is the magic we are deserve to know, and you - are the magician.
Thanks for showing me this. My wife and I have had a tough time getting my wheelchair in our suv. I knew there was a diy pulley system I could use I just didn't know what. Thanks again. Tell students great job.
You're awesome teacher! Thanks for showing your students something that they can relate to/apply in the real world instead of just teaching out of a book! A++
thank you
I use this everyday in my job as a Lineman. This is a very well done basic demonstration without getting into all the math.
thanks Jesse
MANNNNN WHERE WERE U ALL MY 12 YR OF SCHOOLING. MAN I GREW UP IN LOS ANGELES NEVER HAD TEACHER LIKE U, SEEMS LIKE WE NEVER HAD THIS MUCH FUN LEARING , THANKS FOR ALL U DO , LOVED TO HAD U AS MY TEACHER,
thank you, unfortunate that I was on the opposite coast
3:03 that principals a troll 😂
Sir, you are an amazing Teacher. Practical experience, fun and physics. This should be a project for every student throughout the world. You could make it different, but you couldn't make it better. This is such an inspiration. This is the joy of teaching. Thank you so much :)
Physics is just normal life. Your practical explanation of pulleys makes this accessible to everyone, it's so easy to understand when you do the experiment and when your teacher explains the obvious.
Bruce Yeany, you are my hero of the week. My physics expertise was a product of hard work and my autodictactic skills. If only I had had a teacher like you. You are one in a million. I'm sure that many of your students will have had their lives changed (for the better) because of your love of sharing expertise in a practical, easy-to-understand way.
If I were Prime Minister of the UK, I would appoint you to lead and design UK Science teaching for the next generation(s).
Wonderful :)
P.S. The brake is just genius.
P.P.S. If it were possible to vote for the Best Video that you have viewed this year, your video would get my vote. Inspiring.
sbzerski, Thank you for the kind words and certainly appreciate hearing from you. I've spend a lifetime trying to find the best ways for making physics concepts easier to understand. I've had a lot of help along the way and I'm happy to share what I've learned
Teachers like Professor Yeany have inspired untold numbers of others to pursue a better understanding of the physical world. Thank you sir :)
I'm still having trouble believing the principal agreed to put the fate of his rear end in the students' hands. XD
They got "safety" brakes though
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dafuq?
I wonder if safety breaks were in the initial tries...hopefully no injuries if there were.
just showed this to my seven year old daughter, she was very inspired as was I - God Bless teachers like you!
The Principal is quite a good sport for taking part. Great IRW demo.
Such a great explanation of how the pulley system works! Great job Bruce! I wish all teachers were as creative as you. Greetings from South Africa
Regards from spain! it is awesome how enjoy science, and how you show that to students!
Thank you, Wijos, it's great to hear from someone in Spain!
Awesome to see educators who truly love to teach. Wish our country would properly pay well-qualified/enthusiastic educators like Bruce.
We need more teachers like this engaged with their work and students. Bruce, I admire that you are making a difference in their future.
Thank you Sean
I really applaud the effort in making a science and tech (or any subject matter really) concept fun
A man who really loves teaching and exploring Physics !
😀👍
Just wanted to say thanks for this video! I've used it every year with my grade 5s for the last 4 years! It makes these concepts SO much easier to understand for them!
I'm happy to hear it helps
This is exciting learning, these kids will always remember this!
Thank you for your explanation.
5:09 thats the point when it doesn't look like ''magic'' and it starts to make sense. great video Mr. Yeany
Great teacher, congratulations!
I wish my kids' (and all kids) had YOU for a science teacher! Thanks for posting this so we can enjoy remotely!
Thanks for your video.. I actually learned a lot. I work in the hvac field and I was looking for this types of videos.
i always thought that physics was boring,until i had to search a way to lift heavy objects lol,nice video!
Dr. Stone Anime Episode 6 made me come here :D
was doing some research...somehow i feel deja vu because i watch that too
Same.
yep ;D
Me too
Me too
Fuck yea! THIS is science.
How to make students truly excited about science. Awesome teacher, awesome pedagogue!
An inspired teacher. This is called active learning. If you want to teach someone such physical things, allow them to use their hands ... they will be able to solve problems faster and in a fun way. Laughter lets the learning juices flow.
With a mechanical advantage of 2 you aren't pulling twice the distance to move the load half the distance, you're pulling twice the distance to get the load to move the same distance, or pulling the same distance to get the load to move half the distance.
I took physics in high school. now in college. needed a little review on fixed pulley systems and work ratios and this was immensely helpful. Thank You!
Great video. Your students looked like they had a great time.
Thank you for this video! I am writing a children's book where they use pulleys, and this really helped me understand how it should work!
Wow! thanks for making this video! Keep up the fantastic work!
Awesome,wish we had teacher like you. Learning from these experiments👍👍
Sir. Thank you. I am building the best system for storing my jeeps hard top on the ceiling just using my own power and factoring in ease of use. I learned that for all I thought I knew, I knew nothing of value that could help me do that. I appreciate you walking through this and wish you continued success.
Thanks Freddy, glad it could help.
Great job teacher!! I wished I had a teacher like you!
Great video. Thanks
YOU ARE A FRICKIN LEGEND. LEGENDARY MAN
top notch! this is going to help me solve a problem with moving large fuel containers in my garage.
Great video , great teacher you are sir
Your video clip is very helpful for me.Thank you very much.
We need all teachers like this :)
What a great video and great teacher thanks bruce
Excellent! Thank you!
This is the best Idea I can implement in my daily work thanks a lot sir..
Best teacher ever?
You are a good teacher, if my country got teacher like you...
Your way of teaching is the best keep it up👍🏻
You have the best teachers ever😃
Superb explanation 😊
What a school ! I'm jealous...
Thanks for sharing, I had some trouble understanding the concept and glad to see someone, I'm able to understand and learn from. Also, I didn't know how to do the two pulley system, but now I do. :D
Hi Marshall, glad I could help
Correct me if I'm wrong, but I believe the angle of the applied force gives the principle an advantage as opposed to the students pulling at more extreme angle.
Great videos. I wish all high school science teachers were as demonstrative as yourself.
Keep it up!
Thank you. I'm 23 and I've been puzzling for days trying to figure out how these things work.
That is good teaching!
Good - very good - engaging exercise that will never leave their minds, no matter how much or how little they understand it; they know there's something there! Which they can explore more later. I think the stress on the rope with the increased advantage is similarly lessened. You're still pulling on the railing just as hard and the pulleys may be taking some stress but the rope is dividing the load (according to how many strands are pulling up from the object being lifted) and doesn't need to be as strong / stressed.
Thank you very much sir, this was very helpful even for an undergrad studying math
thanks from my deep heart
great video!
guy is a great teacher; most kids aren't so fortunate.
Well done sir.
Again nice job
Great teacher
I loved your passion to share with the kids. Now lets change the circles diameter, so you have to pull less.
I saw a documentary once about the Eiffel tower initial elevator was using this principle.
Great video to learn from a practical experience. I would like to know more about the brake system though.
the rope goes through a tube which feeds it into the first pulley, this tube is like a lever and can pivot at the one end closest to the pulley. When you angle the rope and this tube upwards, that tube pinches it against the rope against the pulley wheel and keeps it from feeding into the pulley, to release it you pull don and the rope and the rope is free to move again
You teach soooooo nicely
Very good information sir
Hi. Thank you for this video and I was able to know what to do now. We are moving and we are at the 4th floor and the the stairs is imposible to use. What type of pulley is that? I need to buy that.
Thank you sir
Hello from the future: I actually had to travel 5 times into the past to view this video :D. You could have really impressed the students by making it so easy that the handicapped boy could have participated, by either pulling it physically or towing it.
Lol these kids are fucking lucky to have had quality education like this. We never did anything engaging like this. I was also busy fighting off bullies, getting bombarded with boredom, listening to teachers who are only there for a paycheck, and figuring out how to make my household a better place to call home.
The best way to learn. So sad that in my country things aren’t like that
Are are wonderful. You are good at teaching pulleys. I wish you were my teacher.Then I would learn more and be super smart.
I learned something from this video
As a crane operator this is the part of the crane that interests me the most
Dankie/ Merci mister/ teacher. It helps a lot. The trolleys look so simple? I build a hoist with a pully (2x3) that can lift 450kg. When I shift the center of the hoist with 1m the lifting pulley can only lilt a max. of 50kg. So in this way I'll have to get a (2x5) pulley system. Thx.
Thanks sir ☺️ you are the best 😊
Ty
Really amazing 😁
This teacher makes me wanna learn
Bruce yenny can u tell me how to make a two rope bridge and go from on end to other using pulley or zip line like thing
that's really cool
This is by far the best explanation for pulleys I've ever had
Hello sir.
Could you please explain if there is a "rule of thumb" as to how to know what the mech-advantage is in any system?
Is a fixed pulley only consideted as a change of direction?
In this case the mechanical advantage is equal to the number of ropes that are directly supporting the load. Whatever force is applied to the rope that you are pulling on is increased by that amount, minus the force lost to friction. IT also means that you while you are gaining force, you are losing distance by the same rate. So, four support ropes means you will increase your force by a factor of four, but you will need to pull four times further
Thanks
Oh yes..... learning with fun something that is lacking (unfortunately) in my country - 😭😭😭
Ps: thank you I was struggling to understand the concept of the pulley.... That was helpful... Thank you so much
if I had u as a teacher, I wouldn't have dropped out
MUITO BOM!!!
If the moving pulley was instead fixed in place would it still be easier compared to one fixed pulley?
Thanks for the leads.
Thank you!
Do you have a video showing how to make the pulley system? I would love to try this with my children.
this is a purchased pulley set that I found on eBay. you can find smaller cheaper sets at hardware stores
Good job