A bronze bar 3 m long with a cross sectional area of 320 mm² is placed between two rigid walls as shown in Figure. At a temperature of 0°C, the gap A = 2.5 mm. Find the temperature at which the compressive stress in L = 3 m the bar will be 35 MPa. Use a = 18.0 x 10-6 m/(m.°C) and E = 80 GPa %3D

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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.