Blocks shown in figure moves with constant velocity 10 ,m / s towards right. All surfaces in contact

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4-2.Friction

easy

Blocks shown in figure moves with constant velocity $10 \,m / s$ towards right. All surfaces in contact are rough. The friction force applied by $B$ on $A$ is ...........$N$

A

$0$

B

$20$

C

$10$

D

Insufficient data

Solution

(a)

Given that both block move with constant velocity.

So, $a =0$

$f = m _{ A } a = m _{ A } \times 0=0$

$f=0$

Standard 11

Physics

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