A 45⁰ B The uniform rod weighs 420LBa and has its center of gravity at G. Determine the tension in the cable and the reactions at the smooth surfaces at A and B.

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Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.