Question

what arises from friction ?class 8th​

Answer 1

When a body (say a wooden block) is pulled over another surface, these hills and valleys interlock with each other and oppose the relative motion between the two bodies. This gives rise to the frictional force. Thus, friction is due to the roughness of the two surfaces in contact with each other.

Answer 2

Energy

When a body (say a wooden block) is pulled over another surface, these hills and valleys interlock with each other and oppose the relative motion between the two bodies. This gives rise to the frictional force. Thus, friction is due to the roughness of the two surfaces in contact with each other.

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