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Q.

A block of mass 2 kg rests on a rough inclined plane making an angle of 300 with the horizontal. If μs = 0.6 , what is the frictional force on the block ?

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a

9.8N

b

19.6N

c

14.7N

d

4.9N

answer is A.

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Detailed Solution

0.6×9.8×3mgsinθ=2×9.8×12=9.8fs>mgsinθfriction = mgsinθ = 9.8N
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A block of mass 2 kg rests on a rough inclined plane making an angle of 300 with the horizontal. If μs = 0.6 , what is the frictional force on the block ?