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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 bloc

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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
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Correct Answer - 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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