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Hooke's Law and Harmonic Motion

Total questions: 15

Worksheet time: 8mins

Name
Class
Date
1.

Net forces are said to be in _______________________ if the net forces (restoration force) of a pendulum are zero.

a)

flux

b)

equilibrium

c)

oscillation

d)

displacement

2.

In terms of simple harmonic motion, this is the time needed for one full cycle of motion to occur.

a)

amplitude

b)

period

c)

frequency

d)

spring constant

3.

Back and forth motion.

a)

period

b)

equilibrium

c)

oscillation

d)

amplitude

4.

What is the amplitude in terms of a spring or pendulum?

a)

a distance

b)

an amount of time

c)

a speed

d)

a resting point

5.

If a spring is stretched or compressed, it is said to have ____________________________.

a)
gravitational potential energy
b)
elastic potential energy
c)
kinetic energy
d)
thermal energy
6.

What are pendulums useful to calculate?

a)
The speed of the pendulum's swing.
b)

Force of gravity on earth

c)
The weight of the pendulum.
d)
The length of the pendulum string.
7.

You can calculate a this by dividing the force needed to stretch or compress a spring by the distance it was stretched of compressed.

a)

amplitude

b)

period

c)

spring constant

d)

energy

8.

The net forces that work to bring a pendulum or spring back to equilibrium is also called the _____________________.

a)
equilibrium forces
b)
tension forces
c)
gravitational forces
d)
restoring forces
9.

A spring has a spring constant of 500 N/m. A force of 100 N is applied to it. How much does the spring stretch?

a)
0.5 m
b)
0.1 m
c)
1 m
d)
0.2 m
10.

A rubber band has a spring constant of 15 N/m. When pulled with a force of 10 N, how far does it stretch?

a)

0.67 m

b)
1.0 m
c)
0.5 m
d)

0.34 m

11.

A spring is compressed by 0.5 meters and has a spring constant of 350 N/m. What is the force applied to compress the spring?

a)
175 N
b)
300 N
c)
250 N
d)
100 N
12.

A trampoline stretches downward by 0.35 meters when a force is applied. If the spring constant is 450 N/m, what force caused this displacement?

a)

35.5 N

b)

275 N

c)

355.5 N

d)
157.5 N
13.

A slingshot uses a spring with a spring constant of 650 N/m. Before firing, the spring is compressed by 0.1 meters. How much potential energy is stored in the spring?

a)
3.25 Joules
b)
2.0 Joules
c)
5.0 Joules
d)
1.5 Joules
14.

A wind-up toy has a spring inside that compresses 0.03 meters when wound up. The spring has a spring constant of 400 N/m. What is the potential energy of the compressed spring?

a)
0.18 Joules
b)
0.30 Joules
c)
0.24 Joules
d)
0.12 Joules
15.

Based on the information in the picture, what is the potential energy of the stretched spring?

pe = 1/2(k)(x2)

You will first need to calculate spring constant (k).
k = f/x

a)
2 J
b)
0.25 J
c)
1 J
d)
0.5 J