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A 3kg block is pulled by a force which i...

A 3kg block is pulled by a force which is inclined at `37^(@)` to the horizontal table. The friction coefficient between the table and block is `1//3` . For what minimum value of this force, will the block start sliding?

A

5N

B

10N

C

20N

D

25N

Text Solution

Verified by Experts

The correct Answer is:
B
Force acting on block in `y` direction are
`30Ndarr` , `Nuarr` , `(3F)/(5)uarr` implies `N=30-(3F)/(5)` implies `f=muN=(1)/(3)(30-(3F)/5)=10-(F)/(5)`
`"Force acting on block in" `x` direction are
`flarr , (4f)/(5)rarr` Now `(4F)/(5)gef implies Fge10`
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