Question: When y is zero, the springs sustain force F0. Determine the magnitude of the applied vertical forces F and -F required to pull point A

When y is zero, the springs sustain force F0. Determine the magnitude of the applied vertical forces F and -F required to pull point A away from point B a distance y1. The ends of cords CAD and CBD are attached to rings at C and D.

Given:

F0 = 60 lb

k = 40 lb/ft

d = 2 ft

y1 = 2 ft

-F

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