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On the horizontal surface of a truck (mu...

On the horizontal surface of a truck `(mu=0.6)` a block of mass 1 kg is placed. If the truck is accelerating at the rate of `5m//sec^(2)` then friction force on the block will be

A

5N

B

6N

C

5.88N

D

8N

Text Solution

Verified by Experts

The correct Answer is:
A

`"fr"_L=mu_s.N`
`=mu_s.mg`
`=0.6xx1xx10`
`=6N`
pseudo force =ma
=1 x 5
F=5 N
`therefore F lt "fr"_L` block does not move static friction = applied force
`rArr` fr=5N
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