All Questions
11 questions
0votes
2answers
471views
Does a simple pendulum have some radial acceleration at its extreme positions where its speed becomes zero?
Suppose we have a simple pendulum swinging between two extreme positions. At the extreme position its speed becomes zero. As per this reason can I say that at extreme positions radial acceleration (v^...
- 1,425
1vote
1answer
426views
Yo-yo rolling on an inclined plane
As shown in the figure, yo-yo is rolling on an inclined plane, and the tension and static friction are pararrel to the inclined plane. To calculate tension $T$, I wrote down 3 equations. $Mg\sin{\...
2votes
1answer
488views
Angular velocity, angular acceleration and it's observer
I was solving the problem above and realized that I was wrong somewhere. I did two approaches but one didn't work well. 1. let one end which is at hold be the point we calculate torque. Then, $\...
- 23
0votes
3answers
2kviews
Moment of Inertia Race [closed]
Wikipedia shows an example of how to the moment of inertia determines how fast a rotating object rolls down an incline plane. the race Includes: spherical shell, solid sphere, cylindrical ring. solid ...
2votes
2answers
1kviews
D'Alembert Principle Intuitive Understanding
Does Alembert work for systems of rigid bodies? My question comes from this image. (sorry for the poor drawing!) I'm trying to find the acceleration of the block exclusively from the sum of ...
-1votes
1answer
403views
How to solve rotational dynamics problem? [closed]
I am having tons of trouble solving this problem: Two masses, m1 = 2.0 kg and m2 = 1.5 kg, are tied together by a massless string. The string is draped over a pulley that has a mass, M = 1.0 kg, and ...
0votes
1answer
870views
Angular acceleration of falling disk [closed]
Question: A disk of radius 0.10 m falls vertically with its axis horizontal, unwinding a string whose other end is attached above. What is the angular acceleration of the disk in $\mathsf{rad/s^2}$? ...
2votes
1answer
618views
Moment of Inertia: uniform rigid rod on smooth plane [closed]
Consider a rod of length $b$ and mass $m$ on a smooth horizontal plane. A force is applied to one end of the rod. What is the acceleration $a$ and angular acceleration $\alpha$ of the other end of ...
2votes
2answers
21kviews
Acceleration of ball rolling down incline
Suppose you have some object (which can roll like a ball,cylinder,wheel,etc) rolling down an incline without slipping (moment of intertia $I=kmr^2$. I want to find the accleration of the ball as it ...
- 4,686
2votes
0answers
388views
How to model an accelerometer measurements on a car wheel?
I am working on kinematically modelling an accelerometer on a car wheel. When working on the initial conditions, I am confused whether or not I should use the gravitational acceleration since there ...
- 21
3votes
2answers
8kviews
Finding angular acceleration from torque
We have to analyze this video Givens: An applied net torque due to the wind on the windmill is equal to $1500 \mathrm{\ N \cdot m}$. Each (of the 3) propeller props weighs approximately $45 \mathrm{\ ...
- 1,168
