Periodic Motion

Question 1

Motion that repeats at a constant rate

Answer 1

Periodic motion

Question 2

Position where the mass is at rest

Answer 2

Equilibrium position

Question 3

Velocity is maximum as the mass passes through the equilibrium position, the spring force continues to decrease while gravity maintains a constant force on a mass

True of False

Answer 3

True

Question 4

Friction that opposes the restoring force in oscillating systems produces

Answer 4

Damping

Question 5

Below the equilibrium position, the upward pull of the spring is stronger than the downward pull of gravity

True or False

Answer 5

True

Question 6

Periodic motion that is controlled by a restoring force proportional to the system displacement from its equilibrium position is called

Answer 6

Simple Harmonic Motion

Question 7

The mass on the spring never goes farther from its equilibrium position than it was originally pulled, and a pendulum never rises above the height from which it was released. This maximum displacement is called

Answer 7

Amplitude

Question 8

How many cycles the mass will complete in a unit of time

Answer 8

Frequency

Question 9

Circular motion is similar to SMH

True or False

Answer 9

True

Question 10

A simple or ideal pendulum consists of a mass suspended from an ideal string or a massless rod of length L called the

Answer 10

Pendulum arm

Question 11

All the mass of an ideal pendulum is assumed to be at the end of the pendulum arm

True or False

Answer 11

True

Question 12

The restoring force in a pendulum is the vector sum of the pendulum’s weight and the tension in the pendulum arm

True or False

Answer 12

True

Question 13

In nonuniform circular motion such as that of pendulum, the vector sum of tangential and centripetal accelerations is its total acceleration

True or False

Answer 13

True

Question 14

The restoring force of a pendulum oscillator from small angles is not dependent on the weight of the pendulum’s displacement angle.

True or False

Answer 14

False

Question 15

The magnitude of the pendulum’s initial perpendicular displacement is the length of the side opposite to the initial angle 0

True or False

Answer 15

True

Question 16

The period of of a pendulum is proportional to the square root of pendulum arm length and is inversely proportional to the square root of gravitational acceleration

True or False

Answer 16

True

Question 17

A pendulum’s period is not related to the mass of a pendulum

True or False

Answer 17

True

Question 18

The inventor of the first pendulum regulated clock, was a prominent Dutch scientist

Answer 18

Christiaan Huygens

Question 19

A damped oscillator would not experience simple harmonic motion in the absence of all frictional forces

True or False

Answer 19

False

Question 20

An overdamped oscillator can complete one cycle

True or False

Answer 20

False

Question 21

When the oscillator and medium viscosity are matched so that the mass hardly overshoots the equilibrium point it is called

Answer 21

Critically damped

Question 22

The frequency at which the force is most effective in increasing the swing amplitude

Answer 22

Natural oscillation frequency

Question 23

Is indicated by large amplitude oscillations

Answer 23

Resonance

Question 24

Result from the periodic application of a force to the system

Answer 24

Driven oscillations

Question 25

Are oscillations of extended bodies

Answer 25

Waves

Question 26

The material through which waves travel

Answer 26

Medium

Question 27

An oscillation in the medium

Answer 27

Disturbance

Question 28

Is a disturbance that displaces the medium along its line of travel

Answer 28

Longitudinal waves

Question 29

Is a disturbance that displaces the medium perpendicular to its line of travel

Answer 29

Transverse waves

Question 30

The regions where the molecules are pushed together have higher density and pressure than the average medium

Answer 30

Compression zones

Question 31

The regions where the molecules are spread apart have lower density and pressure are called

Answer 31

Rarefaction zones

Question 32

Longitudinal waves travel more rapidly through solid than through gases True or False

Answer 32

True

Question 33

Some mechanical transverse waves can pass through gases or liquids True or False

Answer 33

False

Question 34

Can carry information and energy from one place to another

Answer 34

Periodic waves

Question 35

Is the distance from one peak to the next

Answer 35

Wavelength

Question 36

Are longitudinal pressure waves that come from a vibrating body

Answer 36

Sound waves

Question 37

Sound cannot travel through a vacuum True or False

Answer 37

True

Question 38

Is the amount of power transported by the wave the the square of the wave's amplitude

Answer 38

Intensity

Question 39

Scientists measure loudness in

Answer 39

Decibels (dB)

Question 40

How high or low a sound is

Answer 40

Pitch

Question 41

The frequency of the dominant note

Answer 41

fundamental

Question 42

The multiples of this frequency

Answer 42

harmonics

Question 43

is responsible for the change in frequency

Answer 43

Doppler effect