Question

The youngs modulus of a wire is y. If the energy per unit volume is e, then the strain will be

Answer 1

Answer:

as energy stored=1/2*stress*strain*volume

and energy/volume=E (given)

so, E=strain²*Y (strain=stress/Y ,Y=young mod. of elasticity)

so strain=(2E/Y)½

Answer 2

Answer:$\sqrt2E/Y$