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A 2 foot long spring is suspended from the ceiling. To this spring we attach a...

A 2 foot long spring is suspended from the ceiling. To this spring we attach a 32 lb weight that stretches the spring 1.99 feet into an equilibrium position. At time t = 0 we pull on the string and stretch it another 8 inches before releasing it. The friction in the spring gives rise to a damping force of 1lb with a velocity of 24 inches/second.

At what time will the ball be closest to the ceiling?

A. t = pi/2

B. t =1

C. t = pi/4

D. t = 1/2

Science   Advanced-Physics   
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