Question

Which of the following is a correct statement to compare rolling friction and sliding friction of an object on a same surface

a) Rolling friction is more than sliding friction
b) Sliding friction is more than rolling friction
c) Both the frictions are equal
d) Can't be compared

Answer 1

Answer:

it's easier to stay a moving object moving (sliding friction) but it's harder to form a stationary object to manoeuvre (static friction). If we move a heavy bag containing wheels, it is much easier so it is easier to roll than to slide. Hence rolling friction is always less than sliding friction.