Question: A sample of initial length l(zero) undergoes compression to the final length l(zero) l due to constant stress applied to its top surface. Express the

A sample of initial length l(zero) undergoes compression to the final length l(zero) l due to constant stress applied to its top surface. Express the work done on the sample as a function of , l0, S0 and the strain e (epsilon). Discuss the sign of W, epsilon, and the stress .

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