Topic 4.1 IB Physics

The four graphs represent a progressive wave on a stretched string.
Graphs A and B show how the displacement d varies with distance x along the string at one instant. Graphs C and D show how the displacement d varies with time t at a particular value of x.
The labels on the graphs are intended to show the wavelength λ, the period T and the amplitude a of the wave, but only one graph is correctly labelled. Which graph is correctly labelled? 

• A
• B
• C
• D

Tags

NGSS.HS-PS4-1

NGSS.HS-PS4-3

Which graph correctly shows how the acceleration a of a particle undergoing SHM varies with its displacement x from its equilibrium position? 

• A
• B
• C
• D

For a system executing simple harmonic motion, the restoring force acting on the system is 

• proportional to the displacement of the system from equilibrium.
• amplitude of oscillation. 
• elastic potential energy. 
• frequency of oscillation. 

An object is attached to a vertical spring and bobs up and down between points A and B.  Where is the object located when its kinetic energy is a minimum?

• at either A or B
• midway between A and B
• one-third of the way between A and B
• one-fourth of the way between A and B

An amusement park ride has a frequency of 0.064 Hz. What is the ride’s period?

• 0.064 sec
• 6.4 sec
• 2pi / 0.064
• 15.625 sec

Tags

NGSS.HS-PS4-1

The wave's amplitude can be determined by measuring the distance between point ______ and point ______.

• A & B
• A & E
• C & E
• B & D

In simple harmonic motion, the displacement is maximum when the: 

• acceleration is zero 
• velocity is maximum 
• velocity is zero 
• kinetic energy is maximum 

The graph shows the variation of the displacement of a wave with distance along the wave.

The wave speed is 0.50 m s-1.

What is the period of the wave?

• 0.33 s

• 1.5 s

• 3.0 s

• 6.0 s

Tags

NGSS.HS-PS4-1

Which graph shows the variation with time t of the kinetic energy (KE) of an object undergoing simple harmonic motion (shm) of period T?

• 
• 
• 
• 

Tags

NGSS.HS-PS3-2

What is true about the acceleration of a particle that is oscillating with simple harmonic motion (SHM)?

• It is in the opposite direction to its velocity

• It is decreasing when the potential energy is increasing

• It is proportional to the frequency of the oscillation

• It is at a minimum when the velocity is at a maximum