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Homework Statement
A spring hangs vertically from a fixed point. When a mass of 94g is suspended from the spring the spring stretches by 2.6 cm before temporarily coming to rest. Determine the extension of the spring at which the strain energy is half its maximum value.
Homework Equations
F=0.5kx^2
The Attempt at a Solution
Loss in Gravitational Potential Energy = Gain in Strain Energy
So Half Strain energy = Half Gravitational Potential Energy
0.5k(.026*10^-2)^2=0.012 so k=6000/169
and since k=F/x using F=0.094*9.8 to get x