Question: Blocks A and B weigh WA and WB and respectively. Using the coefficients of static friction indicated; determine the greatest weight of block D without

Blocks A and B weigh WA and WB and respectively. Using the coefficients of static friction indicated; determine the greatest weight of block D without causing motion.

Given:

WA = 50 lb

WB = 30 lb

μ = 0.5

μ BA = 0.6

μAC = 0.4

θ = 20 deg

HBA HAC

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