4.1 Oscillations

Science

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9 questions

Isabelle

•almost 4 years ago

Question 1

Multiple Choice

10 points

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

t is at a minimum when the velocity is at a maximum

Question 2

Multiple Choice

10 points

A particle undergoes simple harmonic motion (SHM). The graph shows the variation of velocity v of the particle with time t. What is the variation with time of the acceleration a of the particle?

Question 3

Multiple Choice

10 points

The bob of a pendulum has an initial displacement $x_0$

to the right. The bob is released and allowed to oscillate. The graph shows how the displacement varies with time. At which point is the velocity of the bob at its maximum magnitude directed towards the left?

Question 4

Multiple Choice

10 points

A particle performs simple harmonic motion (SHM). What is the phase difference between the displacement and the acceleration of the particle?

$\frac{\pi}{2}$

$\pi$

$\frac{3\pi}{2}$

Question 5

Multiple Choice

10 points

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

Graph A

Graph B

Graph C

Graph D

Question 6

Multiple Choice

10 points

Object P moves vertically with simple harmonic motion (shm). Object Q moves in a vertical circle with a uniform speed. P and Q have the same time period T. When P is at the top of its motion, Q is at the bottom of its motion. What is the interval between successive times when the acceleration of P is equal and opposite to the acceleration of Q?

$\frac{T}{4}$

$\frac{T}{2}$

$\frac{3T}{4}$

$T$

Question 7

Multiple Choice

10 points

Two travelling waves are moving through a medium. The diagram shows, for a point in the medium, the variation with time t of the displacement d of each of the waves. For the instant when t = 2.0 ms, what is the phase difference between the waves and what is the resultant displacement of the waves?

Answer A

Answer B

Answer C

Answer D

Question 8

Multiple Choice

10 points

An object performs simple harmonic motion (SHM). The graph shows how the velocity v of the object varies with time t. The displacement of the object is x and its acceleration is a. What is the variation of x with t and the variation of a with t?

Question 9

Multiple Choice

10 points

A system that is subject to a restoring force oscillates about an equilibrium position.

For the motion to be simple harmonic, the restoring force must be proportional to

the amplitude of the oscillation.

the displacement from the equilibrium position.

the potential energy of the system.

the period of the oscillation.