Vibrations & Waves

Motion that repeats in equal time intervals?

• Periodic motion
• Regular motion
• Repetitive motion
• Cyclical motion

Hooke's Law states...

• Force = k / distance
• Force = k * distance
• Force = k - distance
• Force = k + distance

________ is a body suspended from a fixed point so that it can swing back and forth under the influence of gravity.

• Pendulum
• Swing
• Hanging object
• Dangle

What is amplitude?

• The measure of the maximum displacement of a wave from its equilibrium position.
• The measure of the wavelength of a wave
• The measure of the frequency of a wave
• The measure of the speed of a wave

Identify the amplitude of the pendulum.

• Measure the angle at which the pendulum is released from its resting position to one side.
• Calculate the speed at which the pendulum swings back and forth.
• Measure the length of the pendulum from the pivot point to the center of mass.
• Count the number of swings the pendulum makes in a minute.

The amplitude of the wave.

• A --> B

• A --> C

• A --> C --> A

• A --> C --> B

What is a period of a wave?

• The period of a wave is the distance between two consecutive crests or troughs.
• The period of a wave is the amplitude of the wave.
• The period of a wave is the time it takes for one complete cycle to occur.
• The period of a wave is the speed at which the wave travels.

What is frequency?

• Number of occurrences of a non-repeating event per unit of time.
• Number of occurrences of a repeating event per unit of time.
• The amplitude of a wave.
• The distance between two points.

What is the relationship between period and frequency?

• Period and frequency are unrelated concepts.
• Frequency is always greater than the period.
• Period is the square root of the frequency.
• Frequency is the reciprocal of the period.

What factor affects the period of a pendulum?

• Material of the pendulum
• Mass of the pendulum
• Length of the pendulum
• Temperature of the room