Q.

What is the maximum value of the force F such that the block shown in the arrangement, does not move

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a

20 N

b

10 N

c

12 N

d

20/3 N

answer is D.

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Detailed Solution

f=μRFcos60°=μ(W+Fsin60°)Substituting     μ=143&  W=103    We  get  F=203N
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