Springs: An ideal spring has a spring constant (force constant) of 2500 N/m. is stretched 4.0 cm. How much work is required to stretch the spring by 4.0 cm?
A. 4.0 J
B. 0.00 J
C. 1.0 J
D. 3.0 J
E. 2.0 J
Answer: E
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