Work Done by a Spring Force
A 500 g mass is attached to a spring with a spring constant k = 200 N/m. The mass is displaced such that the spring is compressed 10 cm from equilibrium and is then released from rest. What is the work done by the spring as the mass moves to a position where the spring is stretched by 5 cm?
A
0.75 J
B
0 J
C
0.25 J
D
-0.75 J
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