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A system is pushed by a force F as shown...

A system is pushed by a force `F` as shown in figure All surfaces are smooth except between `B` and `C` is `mu`. Minimum value fo `F` to prevent block `B` from down ward slipping is

A

`((3)/(2mu))mg`

B

`((5)/(2mu))mg`

C

`((5)/(2))mumg`

D

`((3)/(2))mumg`

Text Solution

Verified by Experts

The correct Answer is:
B
`a = (F)/(m_(A)+m_(B)+m_(C))`,FBD of `A,F -N_(1) =m_(A)a`
FBD of `B, N_(1) -N_(2) =m_(B)a` .
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