Suppose a mass weighing 32 lb stretches a spring 2 ft. If the weight is released from
Chapter 4, Problem 71(choose chapter or problem)
Suppose a mass weighing 32 lb stretches a spring 2 ft. If the weight is released from rest at the equilibrium position, find the equation of motion x(t) if an impressed force f(t) = 20t acts on the system for 0 :5 t < 5 and is then removed (see Example 5). Ignore any damping forces.Use a graphing utility to obtain the graph x(t) on the interval [0, 10].
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