Question

An object of radius r and mass m horizontally without slipping with constsnt speed v it then rolls up the hill to the maximum height h=3v^2/4g the moment of inertia if body is is rolling

Answer 1

Answer:

Friction is caused by the irregularities on the two surfaces in contact. Even those surfaces which appear very smooth have a large number of minute irregularities on them. ... So the force of friction is greater if a roughsurface is involved.