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A block of mass 2kg rests on a rough inc...

A block of mass 2kg rests on a rough inclined plane making an angle of `30^@` with the horizontal. The coefficient of static friction between the block and the plane is 0.7. The frictional force on the block is

A

10.3N

B

23.8N

C

11.9N

D

6.3N

Text Solution

Verified by Experts

The correct Answer is:
C
Here, frictionless force, `f=muR` `=mu mg cos theta=0.7xx2xx9.8 cos 30^(@)`
`=0.7xx2xx9.8xx0.866=11.9N`
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