Frequency, Period, and Wave Speed

A mass attached to a spring vibrates back and forth. At the equilibrium position, the

• acceleration reaches a maximum.
• velocity reaches a maximum.
• net force reaches a maximum.
• velocity reaches zero.

The angle between the string of a pendulum at its equilibrium position and at its maximum displacement is the pendulum’s

• period.
• frequency.
• vibration.
• amplitude.

For a system in simple harmonic motion, which of the following is the time required to complete a cycle of motion?

• amplitude
• period
• frequency
• revolution

For a system in simple harmonic motion, which of the following is the number of cycles or vibrations per unit of time?

• amplitude
• period
• frequency
• revolution

How are frequency and period related in simple harmonic motion?

• They are directly related.
• They are inversely related.
• Their sum is constant.
• Both measure the number of cycles per unit of time.

A pendulum has a frequency of 4 Hertz (Hz). Find its period.

• 4 sec
• 2 sec
• 1/2 sec
• 1/4 sec

A pendulum has 10 cycles in 1 second. What is its frequency?

• 1 Hertz
• 5 Hertz
• 10 Hertz
• 15 Hertz

If an object is traveling in circular motion with a

frequency of 7.0 Hz, how many revolutions will it

make in 20s?

Watch this video to check your work!

https://njctl.org/video/?v=uxu9q_WGcjc

• 3.0

• 13

• 38

• 140

An object has a period of 4.0s, what is the

frequency of its motion (in Hertz)?

Watch this video to check your work!

https://njctl.org/video/?v=eAkyGQSkZwk

• 0.25 Hz

• 0.41 Hz

• 0.67 Hz

• 0.89 Hz

An object is revolving with a frequency of 8.0 Hz,

what is its period (in seconds)?

Watch this video to check your work!

https://njctl.org/video/?v=9AvmyVjdb3M

• 0.020 s

• 0.070 s

• 0.11 s

• 0.13 s