Was able to solve a question I was stuck on for like 10+ minutes in less than 30 seconds after watching the first minute of this video. I think the key thing that most people don't realize is that, for boards of uniform density, the COM will be exactly in between (I didn't know that until watching this video!). If I knew that, life would be so much easier. Thank you so much for your help!
It's a weed out exam that's used to bais the applicant pool and make it easier with people from higher socioeconomic backgrounds of getting in becsuse they have the resources to pay for tutors etc to help them score better. Nothing new the medical field is full of biases just as any other discipline
Thank you!!! I never got to learn this in college even though I got the requisite grade because I had a terrible health problem that semester. Three years later, I finally understand what my professor meant by saying that we could choose the point of rotation. Now I just have to go do a bunch of practice problems!
Are "weight" and "mass" interchangeable terms on the MCAT? To my mind, when the question asks how "heavy" an objects is, I would assume it is asking for the "weight" (mass x accel. due to grav.), which would be (15kg x 10m/s^2)=150. Thanks for all the great vids.
Hi! I'm a Senior High School Physics teacher. This might be late but just to answer, the "m10" represents the WEIGHT of the board - one of the downward forces acting on the system aside from the hanging 10-kg mass at the end. To explain why "m10" is the weight of the board: By definition, Weight = mass x gravitational acceleration Since mass is unknown, he retained it as "m", but gravitational acceleration is 9.8 m/s/s in terms of magnitude, and some references actually use "10" instead of 9.8 for simplicity. So yeah, "m10" is the "mass x gravitational acceleration" also known as the weight (of the board).
The distance for your counter clockwise point from the center of mass isn't arbitrary, so I don't see how it can be used to calculate the mass of the board. For example, if I set the d to 1, then m=30kg, to 3m, then m is 10kg.
I couldn't understand meter stick with mass problems until this video. Thank you so much!
Christina Bae easy yar
Was able to solve a question I was stuck on for like 10+ minutes in less than 30 seconds after watching the first minute of this video. I think the key thing that most people don't realize is that, for boards of uniform density, the COM will be exactly in between (I didn't know that until watching this video!). If I knew that, life would be so much easier. Thank you so much for your help!
anyone else studying AP Physics lol? Thanks this video was super helpful!
My gosh!!!😱
Unbelievable!!!!
As easy as that!!!!!!!
Thank you so much sir🙏🙏🙏
this was exactly the refresher i needed on all things torque--it brought so much back to me. thank you so much
Idk what this has to do with medical school but it helped with my physics
haha same, here studying physics and I see stuff about Mcat, like ok is this why medical school takes 10 years cause they learn literally everythinh
It's a weed out exam that's used to bais the applicant pool and make it easier with people from higher socioeconomic backgrounds of getting in becsuse they have the resources to pay for tutors etc to help them score better. Nothing new the medical field is full of biases just as any other discipline
Probably prosthetics and, osteology
Orthopedic surgery
That moment when you realize the 10 meter board was actually a given and the 10 was super washed out and it wasn't just called M-board after all.
Thank you!!! I never got to learn this in college even though I got the requisite grade because I had a terrible health problem that semester. Three years later, I finally understand what my professor meant by saying that we could choose the point of rotation. Now I just have to go do a bunch of practice problems!
Thank you! Please tell your peers about our channel :)
Due to medical reasons, I missed the majority of my first semester of AP Physics. This helped me to understand the torque questions (where i am now).
did you at least pass omg
@@anthonytakouam4324 nah Dawg I dropped tf out lmaooo
Thank you. Please solve more problems. I would like to have some practice. Thank!
Very helpful indeed
what if you're not given an initial point and are trying to solve for where the fulcrum/lever arm should go?
Thank you u saved my life
Me: stressing about torque on the MCAT
TH-cam: EVERYONE LOVES ZAXBYS
awesome, i understand mcat torque now!
You are a life saver, thank you so much!!!
Are "weight" and "mass" interchangeable terms on the MCAT? To my mind, when the question asks how "heavy" an objects is, I would assume it is asking for the "weight" (mass x accel. due to grav.), which would be (15kg x 10m/s^2)=150. Thanks for all the great vids.
how relevant are these problems now the MCAT has been reformatted.
These are for the updated MCAT.
Sir please make a video on angled force☺
Thank you so much! You are amazing!
I'm confused, isn't the torque in the clockwise direction supposed to be negative? Please help me understand.
Celia Rose yes in clock wise it is negative
thanks this helped immensely
thank you 😉
if we take the axis of rotation above the 10 kg object then the problem would be way more simpler ?because the torque about it will be zero
I thought gravity was 9.8
Awesome
Nice lecture
Okay well, I just found out that the lever arm is supposed to be placed perpendicular to a hyperextended Force line. The video assumes this is known
what abt the tension that is holding the mass m
Anyone know what the m.10 stands for under the 10m board. Thanks
Hi! I'm a Senior High School Physics teacher.
This might be late but just to answer, the "m10" represents the WEIGHT of the board - one of the downward forces acting on the system aside from the hanging 10-kg mass at the end.
To explain why "m10" is the weight of the board:
By definition, Weight = mass x gravitational acceleration
Since mass is unknown, he retained it as "m", but gravitational acceleration is 9.8 m/s/s in terms of magnitude, and some references actually use "10" instead of 9.8 for simplicity. So yeah, "m10" is the "mass x gravitational acceleration" also known as the weight (of the board).
what is MCAT stand for?
medical college admissions test!
If the board is 8m long than the Fg will be?
Your lever arm would then become 1m on the left and thus Fg would be m which you would calculate to be 30N I believe. Sorry for answering so late.
The distance for your counter clockwise point from the center of mass isn't arbitrary, so I don't see how it can be used to calculate the mass of the board. For example, if I set the d to 1, then m=30kg, to 3m, then m is 10kg.
Thanks for explaining 😏
if the board has a mass, than it will also account the torque in clockwise as well. that is not considered in your equation.
so this is wrong
the center of mass is to the left of the point of rotation. the torque is ccw, not cw.
this didnt help.