Problem

The spring shown stretches 6 in. when it is loaded with a 50-lb weight. Determine the eq...

The spring shown stretches 6 in. when it is loaded with a 50-lb weight. Determine the equation which describes the position of the weight as a function of time if the weight is pulled 4 in. below its equilibrium position and released from rest at t = 0. The weight is subjected to the periodic force of F = (-7 sin 2t) lb, where t is in seconds.

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