1.

An 80 cm long bar contracts axially by 0.2 mm when a compressive load is applied to it. Determine the strain and the percentage strain.

Answer»

Strain \(\varepsilon\) = \(\cfrac{extension}{original\, lengh}\) = \(\cfrac{0.2\,mm}{800\,mm}\) = 0.00025

Percentage strain = 0.00025 x 100 = 0.025%



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