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You are handed a spring that is 0.500 m long. You hang the spring from a hook
on the ceiling and then attach a 0.550-kg mass to the other end of the spring.
You measure the stretched spring length to be 0.850 m. Determine the change in
the spring’s length and the spring constant.
A. ∆L = 0.35 m k = 12.3 N/m
B. ∆L = 1.35 m k = 6.35 N/m
C. ∆L = 0.35 m k = 15.4 N/m
D.∆L = 1.35 m k = 15.0 N/m



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