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  3. a mass weighing 16 pounds stretches a spring 8 3 f

A mass weighing 16 pounds stretches a spring 8 3 feet. The mass is initially released...

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Advance Math

A mass weighing 16 pounds stretches a spring 8 3 feet. The massis initially released from rest from a point 7 feet below theequilibrium position, and the subsequent motion takes place in amedium that offers a damping force that is numerically equal to 1 2the instantaneous velocity. Find the equation of motion x(t) if themass is driven by an external force equal to f(t) = 25 cos 3t. (Useg = 32 ft/s2 for the acceleration due to gravity.)

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