A spring has a spring constant of 25 N/m,and a mass of 0.75 kg is suspended from it.If the mass is pulled down 0.13 m away from its equilibrium position,what is the work done against the spring?
A) 0 J
B) 0.21 J
C) 0.75 J
D) 5.88 J
E) 1.41 J
Correct Answer:
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