The friction that exists between the surface of two bodies in contact when one body is sliding over the other, is called ___.

1. The property which resists the relative motion between two surfaces in contact is called friction.  2. The coefficient of static friction is defined as the ratio of limiting force of...

Friction is a force that opposes relative motion between surfaces in contact. One of the simpler characteristics of friction is that it is parallel to the contact surface between surfaces...

Correct option is: (A) µs > µk > µr

Correct option is: (A) 35 °C

C) any of the above two cases

B) sliding friction

B) frictional force

D) rolling friction

B) 1 – b, 2 – d, 3 – e, 4 – a, 5 – c

C) Both Uma and Usha are correct