Harmonic Motion

A pair of trapeze performers at the circus is swinging from ropes attached to a large elevated platform. Suppose that the performers can be treated as a simple pendulum with a length of 16 m. Determine the period for one complete back and forth cycle.

• 2 sec
• 12 sec
• 8 sec
• 10 sec

A force of  30 N stretches a very light ideal spring 0.73 m from equilibrium. What is the force constant (spring constant) of the spring?

• 41 N/m
• 22 N/m
• 34 N/m
• 46 N/m

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

Tags

NGSS.HS-PS4-1

Based on your findings, which equation could best describe the pendulum’s period?

• A

• B

• C

• D

A simple harmonic oscillator takes 4.8 s to undergo five complete vibrations. What is the frequency of 1cycle? 

• 1.04 s
• 4.8 s
• 1/4.8 s

A simple harmonic oscillator takes 4.8 s to undergo five complete vibrations. What is the period (T) of 1 cycle?

• 4.8 s
• .96 s
• 9.8 s

The period of a pendulum may be decreased by

• Increasing the mass of the bob
• moving the equilibrium point
• decreasing the mass of the bob
• shortening the length of pendulum

A pendulum has a period of 2 seconds. What is its frequency?

• 2 Hertz
• 1/2 Hertz
• 4 Hertz
• 1/4 Hertz

Measuring the length from the middle (equilibrium) of the pendulum to the highest point of the swing, it is found to be 15 cm. What is the amplitude?

• 30 cm
• 1/15 cm
• 15 cm
• 1/30 cm