Explain tensile stress and compressive stress.

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(N/A) $1$. Tensile Stress: When a deforming force is applied to a body such that the length of the body increases along the direction of the force,the restoring force per unit area is called tensile stress. It occurs when the body is under tension (stretched).
$2$. Compressive Stress: When a deforming force is applied to a body such that the length of the body decreases along the direction of the force,the restoring force per unit area is called compressive stress. It occurs when the body is under compression (squeezed).

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