engineering recuitment HPCL Junior Executive 2025 Mock Test Strength of Materials Torsion of Shaft Moment of Inertia about Polar Axis
Which is the CORRECT option for the polar moment of inertia of the solid shaft?
1
\(J = \frac{\pi }{{64}}{d^4}\)
2
\(J = \frac{\pi }{{32}}{d^4}\)
3
\(J = \frac{\pi }{{16}}{d^2}\)
4
\(J = \frac{\pi }{{16}}{d^4}\)