haldog A -massless-spaghetti is wrapped around a solid cylindrical hakdog with mass M and radius R. Holding the spaghetti on one end, you let the hakdog fall freely, uncoiling itself (without slipping) from the spaghetti as it falls. What is the magnitude of the tension of the hakdog? O Mg/4 O 3Mg/8 O Mg O Mg/3

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Torsion

In mechanical engineering, torque, torsion, and twisting moment are three of the most important concepts which have different meanings. Torque is the consequence of a moment of a force that produces an angular acceleration in a body or induces rotational kinetic energy in a body. For instance, in an automobile, the power transmission shaft is a body that is always under rotation due to the external torque acting on it, this torque is created by the engine.