A Horizontal Spring Having Constant K = 50

question 3

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 equilibrium to half the position of maximum stretch,how much work is done by the spring on the mass?

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

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