Two chairs are being dragged, one empty while other is occupied. On which chair more frictional force is exerted?

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Solution

Friction is experienced more by the chair which is preoccupied. Friction is caused by the interlocking of irregularities in the two surfaces. It is obvious that the force of friction will increase if the two surfaces are pressed harder.

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A. Name two factors on which the frictional forces depends.
B. Two chairs are being dragged, one empty while other is occupied. On which chair more frictional force is exerted?
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