MecMovies 4.0 : M6.21: Maximum Torque for Composite Shaft

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Having determined $τ_{1}$ and $τ_{2}$ , the internal torques carried by each shaft can be computed.

For shaft $(1)$ :

$T_{1} = \frac{τ_{1} J_{1}}{c_{1}}$

$= \frac{(75 N / {mm}^{2}) (2, 268, 758 {mm}^{4})}{40 mm} = 4, 253, 921 N - mm = 4, 253.921 N - m$