The coefficient of static friction between the wedges B and C is s1 and between the surfaces

Question:

The coefficient of static friction between the wedges B and C is μs1 and between the surfaces of contact B and A and C and D, μs2. Determine the smalls allowable compression of the spring δ without causing wedge C to move to the left. Neglect the weight of the wedges.

Given:

μ s1 = 0.6 θ = 15 deg

μ s2 = 0.4 k = 500N/m

P = 50 N

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