It is easy to roll than pull a barrel along a road. - Vidyadip

Question

It is easy to roll than pull a barrel along a road.

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Answer

When a barrel is pulled along a road, the friction between the tyres and road is kinetic friction, but when its rolls along the road it undergoes rolling friction.
The force of kinetic friction is greater than force of rolling friction.
Hence, it is easy to roll than pull a barrel along a road.

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