Harmonic Motion

Which would have the longest period?

Pendulum A: A 200-g mass attached to a 1.0-m length string

Pendulum B: A 200-g mass attached to a 0.5-m length string

• Pendulum A

• Pendulum B

• A & B are the same

An oscillator completes 30 cycles in 15 seconds, what is its period? 

• 30 seconds
• 2 seconds
• 0.5 seconds
• 2 hertz

Tags

NGSS.HS-PS4-1

TWO PARTS: A wave in Lake Michigan arrives on the shore every 5 seconds.  It's period is ____ and its frequency is ____.  (*Answers in that order) 

• 5 seconds; 0.2 hertz
• 0.2 seconds; 2 hertz
• 5 seconds; 50 hertz
• 50 seconds; 0.2 hertz

Tags

NGSS.HS-PS4-1

A mass-spring system can oscillate with simple harmonic motion because a compressed or stretched spring has which kind of energy?

• kinetic
• mechanical
• gravitational potential
• elastic potential

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.

Which of the following is/ are characteristics of simple harmonic motion?

I. The acceleration is constant .

II. The restoring force is proportional to the displacement.

III. The frequency is independent of the amplitude.

• II only

• I and II only

• I and III only

• II and III only

• I, II, and III

What is the definition of the period of a pendulum?

• one oscillation
• the time taken for one oscillation
• the time for one swing back and forth
• swing from A to B to A

What is the only thing that increases the period of a pendulum?

• increase the length of the pendulum
• decrease the length of the pendulum
• increase the weight of the pendulum bulb
• decrease the weight of the pendulum bulb

What is the equation for frequency?

• f = t/n
• f = 1/T
• f = 2 T

Tags

NGSS.HS-PS4-1

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