The shaft shown in Figure 4 is made of red brass C83400 copper with an allowable shear stress of 20 MPa, determine the maximum allowable torques T₁ and T₂ that can be applied in sections A and B respectively. Also, determine the angle of twist for both sections A and B. (L=0.75 m) 100 mm- 80 mm Section a-a T2 1 m Figure 4. Torsion in a circular rod.

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British Gravitational Bg System Of Units

Measuring is the comparison of a particular physical quantity with its reference value. A unit is a fixed physical quantity. The length is a physical quantity. A physical quantity is the product of a unit and the numerical value we need to compare with.