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The coefficient of friction between the block and the surface is 0.25. For the system to be in equilibrium, the value of M is

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3 Kg

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answer is A.

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Detailed Solution

T₁ = Tsin(45)

T₂= Tcos(45)

T₁ = T₂= f_k= (f_s)_max

mg = (f_s)max

mg = μ×8×g

m = 0.25×8

m = 2kg

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