Question: A shaft is required to transmit (7.5 mathrm{~kW}) at (600 mathrm{rpm}). The maximum torque exceeds the mean torque by (40 %). Calculate the diameter of

A shaft is required to transmit $7.5 \mathrm{~kW}$ at $600 \mathrm{rpm}$. The maximum torque exceeds the mean torque by $40 \%$. Calculate the diameter of the shaft if shear stress is not to exceed $70 \mathrm{MPa}$. Also calculate the angle of twist in a length of $2 \mathrm{~m}$. Take $G=84 \mathrm{Gpa}$.

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