Potential Energy Answers

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3

Lamar writes several equations trying to better understand potential energy.

Question illustration
A
The elastic potential energy is the same for any distance from a reference point.
B
The gravitational potential energy equals the work needed to lift the object.
C
The gravitational potential energy is the same for any distance from a reference point.
D
The elastic potential energy equals the work needed to stretch the object.
4

Which describes how the spring constant affects the potential energy of an object for a given displacement from an equilibrium position?

A
The higher the spring constant, the greater the gravitational potential energy.
B
The lower the spring constant, the greater the gravitational potential energy.
C
The higher the spring constant, the greater the elastic potential energy.
D
The lower the spring constant, the greater the elastic potential energy.
5

Kristina demonstrates a toy for her younger brother. The steps to operate the toy are listed below.Step 1. Push the toy down.Step 2. A spring compresses.Step 3. Release the toy.Step 4. The toy jumps into the air.

A
Elastic potential energy changes to gravitational potential energy.
B
Gravitational potential energy changes to elastic potential energy.
C
Kristina does work to increase the gravitational potential energy.
D
Kristina does work to increase the elastic potential energy.
6

Every spring has an equilibrium position. Which statements describe a spring at its equilibrium position? Check all that apply.The spring constant is zero.The elastic potential energy is at a maximum.The elastic potential energy is zero.The displacement of the spring is at a maximum. The net force acting on the spring is zero.

A
The spring constant is zero.
B
The elastic potential energy is at a maximum.
C
The elastic potential energy is zero.
D
The displacement of the spring is at a maximum.
E
The net force acting on the spring is zero.
8

Which factor affects elastic potential energy but not gravitational potential energy?

A
spring constant
B
acceleration due to gravity
C
distance from a given position
D
amount of matter in the object

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