A thin rectangular polymer plate PQRS of width b = 418 mm and height a = 188 mm is shown in the figure. The plate is deformed so that corner Q is displaced upward by c = 3.2 mm and corner R is displaced leftward by the same amount. Determine the shear strain at corner P after deformation. y y = R P b S rad A solid circular rod with a diameter of d = 20 mm is shown in the figure. The bar is made of an aluminum alloy that has an elastic modulus of E-71 GPa and Poisson's ratio of v=0.35. When subjected to the axial load P, the diameter of the rod decreases by 0.028 mm. Determine the magnitude of load P. Answer: P= i KN In the figure, rigid bar ABC is support by a pin at B and by post (1) at A. However, there is a gap of A = 8 mm between the rigid bar at A and post (1). After load P is applied to the rigid bar, point C moves left by 9 mm. If the length of post (1) is L =2.00 m, what is the average normal strain that is produced in post (1)? Use dimensions of a = 1.30 m and b =0.80 m. Use the correct sign conventions for normal strain. L (1) 8 = Rigid bar B