Question

19. Friction, that exists between two surfaces in contact, when there is no relative motion between them, is called (a) sliding friction (b) static friction (c) viscous drag (d) rolling friction​

Answer 1

Answer:

Static friction

Static friction: If the two surfaces in contact do not move relative to each other, one has static friction.

Answer 2

Answer:

• 19. Friction, that exists between two surfaces in contact, when there is no relative motion between them, is called (a) sliding friction (b) static friction (c) viscous drag (d) rolling friction

Explanation:

b is the answer

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