Simple Harmonic Motion + Waves

Question 1

Harmonic motion shows

Answer 1

Repetitive movement

Question 2

What is the Period (T)?

Answer 2

Time it takes for the particle to complete 1 revolution

Question 3

What is the frequency (f)?

Answer 3

The number of cycles the particle makes in a given time period

Question 4

What are the units of frequency?

Answer 4

s-1 or Hz

Question 5

How can frequency become angular frequency (w)?

Answer 5

Multiply frequency by 2π

Question 6

What is the equation for frequency (f)?

Answer 6

1 / T

Question 7

What happens to a particle’s path if it is projected onto a line adjacent to circle?

Answer 7

The particle position oscillates between +x and -x

Question 8

How does an object oscillate in simple harmonic motion?

Answer 8

It oscillates back and forth from the equilibrium point with angular frequency

Question 9

What kind of force is an object subject to in simple harmonic motion?

Answer 9

Linear restoring force

Question 10

What happens during Linear restoring force?

Answer 10

• Object always directed back towards equilibrium

- Mag is perpendicular to the displacement

Question 11

How is the acceleration in simple harmonic motion?

Answer 11

a = -w^2 • x

Question 12

k is the spring constant which measures the

Answer 12

Stiffness of a spring

Question 13

The larger the k, the

Answer 13

Stronger the spring

Question 14

In a pendulum, the spring constant k can equal to

Answer 14

mg / L

Question 15

For pendulums, the angular frequency (w) is related to

Answer 15

g and the L of pendulum

Question 16

For pendulums, the angular frequency (w) is not affected by

Answer 16

• Mass of pendulum

- Angle of displacement

Question 17

What is the equation of particle displacement of a spring / pendulum?

Answer 17

x = A • sin(w•t)

Question 18

How is the energy in spring / pendulum?

Answer 18

E = K + U

Question 19

What is the PE (U) in springs / pendulum?

Answer 19

U / PE = 1/2kx^2

Question 20

When the mass is at eq in springs, the PE is

Answer 20

0

Question 21

When the mass is at eq in springs, the KE is

Answer 21

At Max

Question 22

How is velocity when oscillation at max?

Answer 22

V = 0

Question 23

How is KE when oscillation at max?

Answer 23

KE = 0

Question 24

How is max PE when oscillation at max?

Answer 24

PE = 1/2kA^2

Question 25

How is the period (T) in springs?

Answer 25

T = 2π • √m/K

Question 26

What is angular frequency (w) in springs?

Answer 26

w = √k/m

Question 27

KE is at its maximum in a spring when

Answer 27

x = 0

Question 28

How is the PE (U) in springs?

Answer 28

1/2kx^2

Question 29

What is k in a pendulum?

Answer 29

k = mg / L

Question 30

How is the period (T) in pendulum?

Answer 30

T = 2π • √L/q

Question 31

How is the PE (U) in a pendulum?

Answer 31

U = mgh

Question 32

What is angular frequency (w) in pendulum?

Answer 32

w = √g/L

Question 33

What are transverse waves?

Answer 33

Waves in which particles oscillate perpendicular to wave motion

Question 34

What are longitudinal waves?

Answer 34

Particles oscillate in the direction of wave motion

Question 35

What is the equation of the displacement (y) along the wave's motion?

Answer 35

y = A • sin(kx-wt)

Question 36

The wavelength is the distance from

Answer 36

1 crest to another

Question 37

What is the speed of a wave (v)?

Answer 37

``` v = f • wavelength v = wavelength / T ```

Question 38

What is the equation of the wave number (k)?

Answer 38

k = 2π / wavelength

Question 39

Phase difference is displayed by

Answer 39

Two similar waves

Question 40

Phase difference describes how

Answer 40

Aligned 2 waves are with one another

Question 41

Phase difference is usually expressed in

Answer 41

Angles

Question 42

What does the principle of superposition state?

Answer 42

When waves interact with one another, the result is the sum of waves

Question 43

What happens when waves add in phase?

Answer 43

Their amplitudes add together, allowing for constructive interference

Question 44

What happens when waves add out of phase?

Answer 44

There is around an 180º difference, resulting in destructive difference

Question 45

A traveling wave consists of a

Answer 45

Strong fixed at one end

Question 46

How does the wave propagate in a traveling wave?

Answer 46

It goes down a string

Question 47

What does a traveling wave do at a boundary?

Answer 47

Reflect and invert

Question 48

What is the relationship between the waves in a traveling wave?

Answer 48

The original and reflected wave interfere with one another

Question 49

A standing wave is one in which

Answer 49

Both ends of the string are fixed

Question 50

Antinodes are

Answer 50

Points in between nodes

Question 51

Nodes are

Answer 51

Points of wave that remain at stress