A 25-Kg Object Is Attached to a Spring of Force Constant

question 108

Multiple Choice

A 2.5-kg object is attached to a spring of force constant k = 4.5 kN/m.The spring is stretched 10 cm from equilibrium and released.What is the kinetic energy of the mass-spring system when the mass is 5.0 cm from its equilibrium position?

• A)5.6 J
• B)11 J
• C)17 J
• D)14 J
• E)42 J

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