1. The problem statement, all variables and given/known data A specimen tested in a simple torsion testing machine , the specimen was 12.5mm in diameter and the angles were read over a gauge length of 0.75m Determine the modulus of rigidity of the material taking the torque T as 4.5Nm and the angle of twist as 4.0 degrees 2. Relevant equations T/J=τMax/R=Gθ\L 3. The attempt at a solution J=∏(0.025)4/32 J=3.8349x10^-8 4.0degress=0.0698132 4.5/3.8349x10^-8=G(0.0698132)/0.75 =>G=126x10^7 Wondering if this looks correct ??