A homogeneous disk of weight W=6 lb rotates at the constant rate w-22 rad/s with respect to arm ABC, which is welded to a shaft DCE rotating at the constant rate w211 rad/s. Determine the angular momentum H4 of the disk about its center A rohin bas bfsj The angular momentum HA of the disk about its center A is HA

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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.