Q. A spring having its force constant of 3 N/m is at a distance of 1.2 m from its equilibrium
position. Calculate (i) restoring force and (ii) potential energy stored in it.
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F=-kx
= -3*1.2
=-3.6N
The minus sign indicates it is restoring force.
potential energy= 1/2*k*x^2
=0.5*3*1.2
=1.8Nm
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