Simple Harmonic Motion of Pendulums Video Lessons

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Problem: 1. Which of the following is not an example of approximate simple harmonic motion?a. a ball bouncing on the floorb. a child swinging on a swingc. a piano wire that has been struckd. a car's radio antenna waving back and forth2. A mass attached to a spring vibrates back and forth. At the equilibrium position, thea. acceleration reaches a maximum.b. net force reaches a maximum.c. velocity reaches a maximum.d. velocity reaches zero.

FREE Expert Solution

1.

Simple harmonic motion takes place when there is a restoring force F, proportional to the displacement from the equilibrium position.

The force acts in a direction opposite to the displacement, so that we have F=-kx.

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Problem Details

1. Which of the following is not an example of approximate simple harmonic motion?

a. a ball bouncing on the floor

b. a child swinging on a swing

c. a piano wire that has been struck

d. a car's radio antenna waving back and forth

2. A mass attached to a spring vibrates back and forth. At the equilibrium position, the
a. acceleration reaches a maximum.
b. net force reaches a maximum.
c. velocity reaches a maximum.
d. velocity reaches zero.

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