Question

For perfect rolling motion, work done against friction is zero. State whether the statement is True (or) False And Justify it

Answer 1

Work done by external forces along an incline Friction does negative translational work, but positive rotational work. The work done byfriction in translation and rotation are equal, but opposite in sign. The network by friction is zero. We find thatwork by friction in rolling is zero.

Answer 2

I think it should be false
work = force + displacement
there is force applied by rolling motion and also displacement occur