PLEASE SOLVE BOTH OF IT THANKS

Torsion Q1). A square block of rubber, 350 mm x 350 mm x 25 mm thick, is fastened by adhesive between two parallel horizontal plates 25 mm apart. If a horizontal force of 29.4 KN is applied to one of the plates while the other is held firmly in its original position, what will be the magnitude of relative motion between the plates ? Under these conditions, state the values of shear stress and shear strain in the rubber. (Assume G = 1.5 MPa 6 marks Q2). Calculate the stress developed in the extreme fibres of a 35 mm diameter solid bar due to an applied torque of 320 Nm . 3 marks