A 020-Kg Object Is Oscillating on a Spring with a Spring

question 48

Multiple Choice

A 0.20-kg object is oscillating on a spring with a spring constant of k = 15 N/m.What is the potential energy of the system when the object displacement is 0.040 m,exactly half the maximum amplitude?

• A)zero
• B)0.006 0 J
• C)0.012 J
• D)2.5 J

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Definitions:

Muscle Tension

The force generated by the contraction of muscles, important in movement, maintenance of posture, and the production of body heat.

Contraction

The process of a muscle becoming shorter and tighter, usually in response to a nerve impulse.

Isometric Contraction

Muscle contraction in which the length of the muscle does not change but the tension produced increases.

Action Potential

A temporary reversal of the electrical potential across the membrane of a nerve cell (neuron) that occurs when the cell generates a nerve impulse.