A Horizontal Spring Having Constant K = 50

question 23

Multiple Choice

A horizontal spring having constant k = 50.0 N/m is attached to a block having mass 0.50 kg.The mass is oscillating freely on a frictionless table with amplitude 15.0 cm.As the mass travels from the position of maximum stretch to half the position of maximum stretch,how much work is done by the spring on the mass?

• A)+0.28 J
• B)-0.42 J
• C)-0.28 J
• D)+0.14 J
• E)+0.42 J

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