If coefficient of friction between both the block is `mu- (1)/(2)` . Find friction force acting between both block.

Options

A. `16N`
B. `20N`
C. `8N`
D. `10N`

Answer

A

Explanation

`S-1 a_(c) =(48) /(12) = 4 m/s^(2)`
`S-2 " "4 to F_(1) = 4xx4=16N`
` S-3 f_(lim)= mu _(5) N =(1)/(2) xx40 =20N`
`S-4 f_(lim)implies F_(r)`
So friction = 16N