AP Physics 1 Unit 7: Oscillations — Free with Answer Explanations

Question 1

A mass on a spring undergoes simple harmonic motion with amplitude $A$ . At what displacement is its kinetic energy equal to its potential energy?

A.

x = 0

B.

x = A /2

C.

x = A / 2

D.

x = A

Question 2

A mass on a spring oscillates with period $T = 2.0 s$ . What is its frequency?

A.

0.50 Hz

B.

2.0 Hz

C.

π Hz

D.

4.0 Hz

Question 3

An object undergoes SHM with amplitude $A = 0.10 m$ and angular frequency $ω = 5.0 rad/s$ . What is the maximum speed?

A.

0.020 m/s

B.

0.50 m/s

C.

2.5 m/s

D.

5.0 m/s

Question 4

Where in its motion does a simple harmonic oscillator have its maximum acceleration?

A.At the equilibrium position.B.At the extremes of motion (turning points).C.At

x = A /2

.D.Acceleration is constant throughout SHM.

Question 5

A $0.50 kg$ mass on a spring oscillates with angular frequency $ω = 4.0 rad/s$ . What is the spring constant?

A.

2.0 N/m

B.

8.0 N/m

C.

16 N/m

D.

32 N/m

Question 6

A simple pendulum of length $L = 1.0 m$ swings near Earth's surface ( $g = 10 m/s^{2}$ ). What is its approximate period?

A.

1.0 s

B.

2.0 s

C.

2 π s

D.

10 s

Question 7

A pendulum on Earth has period $T_{E}$ . If you take it to a planet where gravity is one-fourth Earth's gravity, what is its new period?

A.

T_{E} /4

B.

T_{E} /2

C.

2 T_{E}

D.

4 T_{E}

Question 8

A mass-spring system has period $T$ . If the mass is doubled (and the spring is unchanged), the new period is:

A.

T /2

B.

T / 2

C.

T 2

D.

2 T