Skip to main content

All Questions

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 ...
Mats's user avatar
  • 1
0 votes
2 answers
78 views

How to judge direction of motion?

I have this scenario suppose a cylinder is made by joining two symmetrical cones and is given a gentle push on two rails A and B . What will be the motion of cone . Will it turn right or left I ...
imposter's user avatar
  • 1,200
0 votes
2 answers
686 views

Friction during ball backspin and overspin

I already know sliding friction of ball on a flat table and rolling resistance of it. How do I know coefficient of friction value when the ball has backspin with some angular velocity $\omega$? And ...
user2229336's user avatar
0 votes
2 answers
2k views

Why is there a static frictional force on an object that rolls down a ramp? [duplicate]

It is clear that if a frictional force must exist on an object that rolls without slipping, it must a static frictional force because the contact point of the object with the ground does not move. I ...
curiousgeorge's user avatar