Situation 4. Determine the resultant couple moment of the three couples acting on the plate. = 200 lb ANSWER: F3 = 300 lb MR = 950 lb – ft v 4 ft %3D F = 450 lb A dz = 5 ft d, = 3 ft F2 = 450 lb B. = 200 lb F3 = 300 lb

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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.