Question: Since the brace shown must remain in position even when the magnitude of P is very small, a single safety spring is attached at D

Since the brace shown must remain in position even when the magnitude of P is very small, a single safety spring is attached at D and E. The spring DE has a constant of 50 lb/in. and an unstretched length of 7 in. Knowing that l = 10 in. and that the magnitude of P is 800 lb, determine the force Q required to release the brace.

15 in. 20 in 2inn.

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