Question

Friction can be reduced by changing from

A.sliding to rolling

B.rolling to sliding

C.potential energy to kinetic energy

D.dynamic to static


Give explanation

Answer 1

Friction can be reduced by changing from

A.sliding to rolling

Sliding friction is greater than rolling friction. Because while rolling, area of contact of the two body is lesser than that when sliding. Thus friction is lesser.

Answer 2

A.sliding to rolling.............................