The machine part is held in place using the double-end clamp. The bolt at B has square threads with a mean radius r and a lead r1, and the coefficient of static friction with the nut is μs. If a torque M is applied to the nut to tighten it, determine the normal force of the clamp at the smooth contacts A and C.

Given:

a = 260 mm

b = 90 mm

r = 4 mm

rl = 2 mm

μ s = 0.5

M = 0.4 N ∙ m

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b