If torque is applied to a shaft of length 1.5 meters and a shear modulus of 80 GPa to produce a twist of 2o, what torque is needed at the end of the shaft to produce this if the diameter is equal to 300 mm. J=\pi\cdot\frac{D^4}{32}J=p·D432 \phi=\frac{TL}{JG}