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Define friction. Is it a contact force or non-contact force? Why do we rub our hands in winter ?

Define friction.
Is it a contact force or non-contact force?
Why do we rub our hands in winter ?

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60796 Points
one year ago
Friction is the force which comes into play when one object moves on the surface of another. It is a contact force. When we rub our hands in winter heat is generated due to the force of friction. Therefore, we feel warm.

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