All Questions
24
questions
3
votes
2
answers
540
views
Energy loss due to friction in Rolling Motion
I understand why rolling motion does no work. My (possibly imprecise) summary of the answer is that net work done is zero. And the role of friction is to convert translational kinetic energy into ...
- 347
0
votes
3
answers
126
views
Doubt: (For pure rolling motion and friction)
For pure rolling motion, at the point of contact of the wheel at the ground the net velocity is 0, so there is no relative motion. But if at that instant no relative motion, then how can static ...
- 43
1
vote
2
answers
277
views
Is accelerated rolling with slipping possible?
I have a conceptual question regarding the following tasks. Two cylinders with different coefficients of friction are rolling down a inclined plane, thus accelerating. According to the task, due to ...
- 47
0
votes
1
answer
329
views
Is friction equal to gravitational force during rolling down a ramp?
I'm studying the motion and forces involved in a ball (bidimensional) rolling down a ramp inclined by an angle $\theta$ from the x-axis.
This is the body diagram (I didn't draw forces but there is ...
- 3
0
votes
2
answers
85
views
Rolling without slipping, where is the friction?
Consider a ball rolling without slipping on a horizontal surface. Obviously it is going to stop at some point, but why? Since the surface of the ball that is in contact with the surface of the floor ...
- 1
-1
votes
3
answers
165
views
Friction during rolling
I have four doubts regarding friction during rolling.
Does slipping mean zero angular velocity, or is it just the $v$ velocity not being equal to $\omega r$?
If a wheel is initially given the ...
user287374
0
votes
1
answer
640
views
Question about rolling and slipping of a cylinder for example down an inclined plane
What is the point at which sliding occurs?
I know sliding is when the $V_{cm}$ goes faster than the point of contact on the ground. But I've been reading that sliding occurs when the total torque on ...
- 553
1
vote
1
answer
104
views
Wheel slips and weight
With rainy season starting, I have been thinking about traction and have a question:
Question: If two identical vehicles, one of mass $m$ and the other of mass $2m$ are starting from rest with equal ...
- 13
0
votes
4
answers
550
views
Direction of friction of a rotating ring/disk
I'm trying to understand friction but I'm getting a bit confused...
If I have a ring rotating on the ground around its COM what is the direction of the friction?
If I have the same ring, but this time ...
- 147
8
votes
5
answers
2k
views
Conservation of energy of 2 identical Rolling Disks with and without friction
My physics book claims that if two identical disks moving at the same velocity travel up nearly identical hills, with the second hill not having friction, then the disk rolling up the first hill will ...
- 81
0
votes
4
answers
97
views
Conservation of angular momentum and collision [closed]
The problem:
Consider a thin ring rolling without slipping (pure rolling) on a rough surface (means there is friction) with constant velocity $v_0$. The ring hits a vertical wall elastically and ...
0
votes
1
answer
741
views
Rolling race where objects roll with slipping
One of the interesting demonstrations of Moment of Inertia includes the "Rolling Race" where objects of same mass and radii but having different Moments of Inertia, are allowed to roll down ...
- 5,306
0
votes
1
answer
93
views
Work done by static friction in Rolling
In rolling without slipping, I understand that the velocity of the point where static friction with the ground is 0, and therefore static friction cannot do work. However, from newtons laws, an object ...
user225234
0
votes
1
answer
701
views
Billiard ball with side spin
A cue ball is travelling along a snooker table. Initially, it has only side spin (yaw). As it travels it will develop a rolling spin (pitch).
Can the ball develop any (roll) and thus move off the ...
- 183
2
votes
3
answers
882
views
Why does friction not accelerate a wheel?
It seems like a silly question because this defies common sense, but it appears that friction is supposed to accelerate a wheel (not attached to anything).
We can derive from Newton's laws that $\...
user113773