Springs & Pendulums
SHM
Waves
Wave Calculations
Standing Waves
100
What is the only thing that affects the period of a pendulum?
Length of the string
100
What is the definition of a period (T)?
The time for one complete oscillation.
100
What is the difference between a transverse and longitudinal wave?
In a transverse wave, the particles oscillate in a direction perpendicular to the direction of wave propagation, in a longitudinal wave, the particles oscillate in a direction parallel to the direction of wave propagation.
100
If the period of a wave is 0.2 seconds, what is the frequency?
5 Hz
100
What are the areas of no movement called on a standing wave?
Nodes
200
What affects the period of a mass on a spring?
Mass and spring constant
200
Where is potential energy the greatest in simple harmonic motion?
At the amplitude points
200
What occurs when two crests of a wave meet?
Constructive interference
200
What is the wavelength of the wave shown below?
2 meters
200
How many nodes and antinodes are in the standing wave below?
7 nodes, 6 antinodes
300
What kind of energy does a spring have at its amplitude positions and what is the equation?
Elastic potential energy, 1/2 k x2
300
Name at least two things that are zero at the equilibrium position in the simple harmonic motion of a mass on a horizontal spring.
spring force, acceleration, potential energy
300
Name two ways a guitarist can increase the pitch on a guitar.
Shorten the length of the string or tighten the string
300
Crests of an ocean wave pass a pier every 5 seconds. If the wavelength of the wave is 10 m, what is the wave speed?
2 m/s
300
What is the wavelength of the standing wave below?
2.5 m
400
A 5 kg mass stretches a spring 20 cm when it is hung vertically. What is the spring constant of the spring?
250 N/m
400
A 2 kg mass on a spring oscillates horizontally in simple harmonic motion. If the velocity of the mass as it passes through equilibrium is 10 m/s, what is the total energy of the system?
100 J
400
What kind of waves can travel in a vacuum?
Electromagnetic waves
400
If the wave below makes 120 vibrations in 2 seconds, what is the speed of the wave?
4.8 m/s
400
A standing wave on a string 20 m long is vibrating in the 4th harmonic. What is the wavelength of the wave?
10 m
500
What length should you make a pendulum to make its period be 1.5 seconds?
0.56 m
500
A mass of 5 kg is attached to a horizontal spring with a spring constant 500 N/m and is oscillating on a frictionless surface. The maximum velocity the mass reaches is 5 m/s. What is the amplitude of the oscillation?
50 cm
500
Crests and troughs can be found in transverse waves...what can be found in longitudinal waves?
Compressions and rarefactions
500
A wave oscillates at 20 cycles in 5 seconds. If the wave passes through the medium at 2 m/s, what is the wavelength of the wave?
0.5 m
500
If the length of the standing wave below is 12 m, and it makes 100 cycles in 20 seconds, what is the speed of the wave?
40 m/s