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Three blocks of masses 6 kg, 4 kg and 2 kg are pulled on a rough surface by applying a constant force 20 N. The values of coefficient of friction between blocks and suface are shown in figure.
Q. Friction force on 6 kg block is

A

`12N`

B

`8N`

C

`6N`

D

`4N`

Text Solution

Verified by Experts

The correct Answer is:
B

`T_(2)+4=20,T_(2)=16Nt`

`f_(2)=8,T_(2)=T_(1)+f_(2),T_(2)=T_(1)+8`
`T_(1)=8`

`f_(3)=8`
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