Question

Rolling a drum is work against friction why​

Answer 1

Explanation:

It does rotational work. We can view this work as a medium between gravitational potential energy and rotational kinetic energy. So when it accelerates down the incline, friction force takes some of the gravitational potential energy and turns it into rotational kinetic energy for the cylinder

Answer 2

Explanation:

when we roll a drum then the friction is working against the motion of the Rolling drum that is v a rolling drum is working against friction