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Question 22
The relation between conservative force F, potential energy U is (x is the displacement)
U=F
dU
F=+
der
dU
dx
I du
x x​

Answer 1

A conservative force is one for which work depends only on the starting and ending points of a motion, not on the path taken. ... The potential energy of a spring is PEs=12kx2 PE s = 1 2 kx 2 , where k is the spring's force constant and x is the displacement from its undeformed position.

its the answer....