SHM

If an object is in oscillatory motion, what must be true if it's in simple harmonic motion? 

• Its motion is along the path of a circle
• acceleration is proportional to the displacement
• Its potential energy is equal to the kinetic energy
• It's attached to a spring

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

Which of the following statement is true about SHM?

• The maximum acceleration occurs when the velocity is maximum
• The maximum acceleration occurs when its velocity is zero
• If the velocity is zero so is the displacement
• The instantaneous velocity of the mass is never 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.

Tags

NGSS.MS-PS4-1

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

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.

A pendulum's period is initially t.  Changes are made to the system so that the new period is 2t. What may have been changed?

• The length of the pendulum was increased by a factor of 2.
• The pendulum was moved to a planet with 2 times the mass of Earth.
• The length of the pendulum was increased by a factor of 4.
• The pendulum was moved to a planet with 4 times the  mass of earth.

By what factor should the length of a simple pendulum be changed in order to triple the period of vibration?

• 3
• 6
• 9
• 27

A certain pendulum with a 1.00 kg bob has a period of 3.50 s. What will happen to the period of the pendulum if the 1.00 kg bob is replaced by a bob with a mass of 2.00 kg?

• Increase
• Decrease
• Stays the same
• Need more information

An object oscillating in simple harmonic motion has a time period T. The first graph shows how its displacement varies with time. Which of the subsequent graphs, A to D, show how the kinetic energy, Ek, of the object varies with time? 

• A
• B
• C
• D

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2