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Harmonic Motion

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Which one of the following quantities is at a maximum when an object in simple harmonic motion is at its maximum displacement?
a. speed
b. acceleration
c. kinetic energy
d. frequency

7. An object moving in simple harmonic motion has an amplitude of 0.020 m and a maximum acceleration of 40 m/s2. What is the frequency of the system?
a. 0.60 Hz
b. 51 Hz
c. 7.1 Hz
d. 16 Hz

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This solution helps with a question involving harmonic motion.

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a. The velocity is zero at maximum displacement, so this is not correct.
b. For simple harmonic motion a=-w^2x is proportional to displacement, but in the opposite direction. ...

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