A motor drives a mechanism that produces simple harmonic motion at one end of a stretched cable such that the oscillation amplitude is 25.1 cm.What is the wave amplitude when the power of the motor is increased by 25.1%? Assume that the frequency oscillation and tension in the wire are unchanged.

Question

Quizplus · Accepted Answer

The wave amplitude is proportional to the square root of the power. If the power is increased by 25.1%, the wave amplitude will increase by 12.55%. Therefore, the new wave amplitude will be 25.1 cm * 1.1255 = 28.1 cm.

A Motor Drives a Mechanism That Produces Simple Harmonic Motion