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Elastic Potential Energy

Instructions: Read each question carefully. Choose the answer that best fits the question. Short answer response questions must be responded to in complete sentences. If the question involves calculations, you must show all your math work.

1.
The spring constant tells you how many newtons of force it takes to stretch the spring one meter.
1. True
2. False
2.
The type of energy stored when an object is compressed under pressure is called                .
1. friction
2. seismic
3. tectonic
4. elastic
3.
The spring constant of a spring varies with the amount of stretch or compression of the spring.
1. True
2. False
4.
states that the restoring force of a spring is proportional to the displacement (extension or compression) of the spring.
5.
A spring with a spring constant of k is cut in into three equal-length pieces. The spring constant of each of the pieces is now 3k.
1. True
2. False
6.
The ability of an object to sustain force without breaking is described by its                           .
7.
How much energy is stored in a spring with a spring constant of 350 N/m if it is compressed a distance of 74 cm?
1. 12950 J
2. 95.8 J
3. 129.5 J
4. 131.25 J
8.
A spring with a spring constant of 65 N/m is displaced −94cm. What is the magnitude of the force exerted by the spring?
1. 287180 N
2. 30.66 N
3. 28.72 N
4. 57.24 N
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