Question: (20) Suppose a spring is constructed that DOESN'T obey Hooke's law, but instead exhibits a restoring force 771 given by F. = kr where

(20) Suppose a spring is constructed that DOESN'T obey Hooke's law, but

(20) Suppose a spring is constructed that DOESN'T obey Hooke's law, but instead exhibits a restoring force 771 given by F. = kr where k = 8 (it needs these units so that force is newtons). How much work is done to stretch this spring by 0.50m from equilibrium?

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