Question: Two blocks that are used in a measuring device have negligible weight. The spring is compressed 6 inches when in the position shown in the

Two blocks that are used in a measuring device have negligible weight. The spring is compressed 6 $i n .$ when in the position shown in the diagram below. The end of the screw is very smooth and the coefficient of static friction at all other points of contact is $μ_{s}$ = 0.35.

k = 20 lb/in. A 60 P. B 45

Determine the smallest axial force $P$ which the adjustment screw must exert on $B$ in order to start the movement of $B$ downward.

k = 20 lb/in. A 60 P. B 45

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