Question

Why are pieces of luggages fitted with rollers

Answer 1

Answer:

It is always easier to roll than to slide a body over another. That is the reason it is convenient to pull luggage fitted with rollers. The rolling friction is smaller than the sliding friction

Answer 2

Answer:

It is always easier to roll than to slide a body over another. That is the reason it is convenient to pull luggage fitted with rollers. The rolling friction is smaller than the sliding friction.