A cylindrical shaft of diameter āDā is subjected to a uniformly distributed torque of T kN-m/m as shown below
The angle of twist at the free end is
1
\(\frac{{16T{L^2}}}{{\pi G{D^4}}}\)
2
\(\frac{{32\;T{L^2}}}{{\pi G{D^4}}}\)
3
\(\frac{{T{L^2}}}{{\pi G{D^4}}}\)
4
\(\frac{{32TL}}{{\pi G{D^4}}}\)