SHM Quizizz Review

Which equation is used to find the period of a pendulum?

• Tp = 2π √ℓ/g

• Ts = 2π √m/g

• Us = 1/2 kx²

• F = kx

What two requirements are needed for an object to be undergoing simple harmonic motion?

• The object has a repeated, periodic, back and fourth motion of a mass attached to a spring, string, or other device.

• The object is undergoing a motion in which it is rotating about its center.

• The object is undergoing a motion in which is it traveling in a circle.

• The restoring force is "harmonic" or proportional to the displacement about an equilibrium position.

Which equation is used to find the force of a spring?

• F_spring = kx

• F = ma

• F_friction = µn

• p = mv

What is the spring constant for a car that settles 1.20 cm when an 80 kg driver gets in?

• 6,350.9 N/m

• 100,002 N/m

• 65,333.33 N/m

• 6.4 N/m

Which best describes a critically damped spring?

• Return to equilibrium takes longer to achieve (too much damping)

• Returns to equilibrium as quickly as possible without overshooting (just the right amount of damping)

• Too many oscillations occur before the object returns to equilibrium (not enough damping)

Which best describes an overdamped spring?

• Return to equilibrium takes longer to achieve (too much damping)

• Returns to equilibrium as quickly as possible without overshooting (just the right amount of damping)

• Too many oscillations occur before the object returns to equilibrium (not enough damping)

Which best describes an underdamped spring?

• Return to equilibrium takes longer to achieve (too much damping)

• Returns to equilibrium as quickly as possible without overshooting (just the right amount of damping)

• Too many oscillations occur before the object returns to equilibrium (not enough damping)

Which is an example of a critically damped object?

• Skyscraper "earthquake" shock system (return to equilibrium is quick without over shooting).

• Springs in a trampoline (many oscillations occur before the object returns to equilibrium).

• A pendulum that completes many oscillations before returning to equilibrium.

Which best describes one oscillation?

• One half of an amplitude.

• One complete "back and fourth" motion.

• Two waves coming together to make one big wave.

• Two waves coming together to cancel each other out.

True or False:

Springs and waves behave very similar to objects that move in a circle.

• True

• False