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A block of mass 4kg is placed in contact...

A block of mass `4kg` is placed in contact with the front vertical surface of a lorry.The coefficient of friction between the vertical surface and block is `0.8`.The lorry is moving with an acceleration of `15m//s^(2)`.The force of friction between lorry and block is `(g=10ms^(-2))`

A

48N

B

24N

C

40N

D

Zero

Text Solution

Verified by Experts

The correct Answer is:
C
`W=mg, f=muma, w lt f`
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