Quiz about AP Physics Simple Harmonic

Question 1

A force of 30 N stretches a very light ideal spring 0.73 m from equilibrium. What is the force constant (spring constant) of the spring?

Accepted Answer

41 N/m

Answer

22 N/m

Answer

34 N/m

Answer

46 N/m

Question 2

If the length of a simple pendulum is doubled, its period will:

Accepted Answer

increase by a factor of sqrt(2)

Answer

halve

Answer

decrease by a factor of sqrt(2)

Answer

double

Question 3

The period of a pendulum may be decreased by

Accepted Answer

shortening the length of pendulum

Answer

Increasing the mass of the bob

Answer

moving the equilibrium point

Answer

decreasing the mass of the bob

Question 4

A pendulum oscillates as shown. At which of the following positions is the potential energy equal to the total energy?

Accepted Answer

C

Accepted Answer

A

Answer

B

Answer

Not enough information

Question 5

The graph shows the variation with time of the displacement of an object undergoing simple harmonic motion. At which of the following time values is kinetic energy zero?

Accepted Answer

40 ms

Answer

0 ms

Answer

80 ms

Answer

100 ms

Question 6

A body executes simple harmonic motion. Which one of the graphs, A to D, best shows the relationship between the kinetic energy, E_k, of the body and its distance from the centre of oscillation?

Accepted Answer

B

Answer

A

Answer

C

Answer

D

Question 7

A pair of trapeze performers at the circus is swinging from ropes attached to a large elevated platform. Suppose that the performers can be treated as a simple pendulum with a length of 16 m. Determine the period for one complete back and forth cycle.

Accepted Answer

8 sec

Answer

2 sec

Answer

12 sec

Answer

10 sec

Question 8

A pendulum is 0.75 meters long and has a period of 4.17 seconds. The Pendulum is on an unknown planet. What is the gravity of the Unknown Planet?

Accepted Answer

1.7

Answer

9.8

Answer

3.4

Answer

Greater than 9.8

Question 9

When is the pendulum at maximum velocity

Accepted Answer

At its lowest point

Answer

At its highest point

Answer

It moves at a constant velocity

Answer

It is at rest

Question 10

When does the mass move at 0 velocity in a mass-spring system?

Accepted Answer

At the farthest point from the equilibrium

Answer

At equilibrium

Answer

At its hightest point

Answer

At its lowest point

Question 11

A marble is placed at the bottom of a semi-spherical bowl, as shown in the figure. The marble is then displaced from the bottom of the bowl to a position about halfway from the top of the bowl. The marble is then released from rest such that the marble always remains in contact with the bowl. Students observe that the marble rolls back and forth as it oscillates about the bottom of the bowl. Which of the following statements best explains why the marble undergoes oscillatory motion?

Accepted Answer

The net force exerted on the marble always has a component directed toward the bottom of the bowl.

Answer

The sides of the bowl become steeper at positions farther from the bottom of the bowl.

Answer

The normal force exerted on the marble decreases with increasing distance from the bottom of the bowl.The normal force exerted on the marble decreases with increasing distance from the bottom of the bowl.C

Answer

The gravitational force exerted on the marble is constant in magnitude and direction.

Question 12

A simple pendulum is used to determine the acceleration due to gravity at the surface of a planet. The pendulum has a length of 2 m and its period is measured to be 2 s. The value of g obtained in this investigation is most nearly

Accepted Answer

20 m/s2

Answer

1 m/s2

Answer

2 m/s2

Answer

10 m/s2

Question 13

A mass attached to a spring oscillates with simple harmonic motion. If the mass is doubled, what happens to the period of oscillation?

Accepted Answer

D) It increases by a factor of $$ ext{sqrt}(2)$$

Answer

A) It doubles

Answer

B) It halves

Answer

C) It increases by a factor of $$\frac{1}{ ext{sqrt}(2)}$$

Question 14

Which of the following is true for a simple harmonic oscillator?

Accepted Answer

B) The restoring force is proportional to the displacement

Answer

A) The acceleration is constant

Answer

C) The velocity is constant

Answer

D) The energy is not conserved

Question 15

A pendulum clock is taken to a mountain where the acceleration due to gravity is less than that at sea level. How will the clock's timekeeping be affected?

Accepted Answer

B) It will run slower

Answer

A) It will run faster

Answer

C) It will not be affected

Answer

D) It will stop

Question 16

In a simple harmonic motion, the phase difference between displacement and acceleration is:

Accepted Answer

C) $$ ext{pi}$$

Answer

A) 0

Answer

B) $$\frac{ ext{pi}}{2}$$

Answer

D) $$\frac{3 ext{pi}}{2}$$

Question 17

A block attached to a spring is pulled and released. At what point is the potential energy of the system maximum?

Accepted Answer

B) At the maximum displacement

Answer

A) At the equilibrium position

Answer

C) At half the maximum displacement

Answer

D) At the point of release

Question 18

What is the effect of damping on a simple harmonic oscillator?

Accepted Answer

C) It decreases the amplitude over time

Answer

A) It increases the amplitude

Answer

B) It decreases the frequency

Answer

D) It has no effect

Question 19

A simple pendulum has a period of 2 seconds on Earth. What would be its period on a planet where the acceleration due to gravity is 4 times that of Earth?

Accepted Answer

A) 1 second

Answer

B) 2 seconds

Answer

C) 4 seconds

Answer

D) 0.5 seconds

AP Physics Simple Harmonic

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