1. A cubic-shaped elastic block with side length L = 50 cm is fixed to the floor. An external force F = 80 N is applied as shown in the figure, causing the top to be displaced laterally by a distance L' = 5 cm. a) Determine . b) Determine the shear modulus C. F x

Assume that if the shear stress in steel exceeds about 4.00 x 108 N/m², the steel ruptures. (a) Determine the shearing force necessary to shear a steel bolt 1.40 cm in diameter. IN (b) Determine the shearing force necessary to punch a 1.25-cm-diameter hole in a steel plate 0.550 cm thick. N

Q2- A biological tissue underwent tensile tests, subjected to the axial load P. a) Determine the average normal (ơ) and average shear stresses (t) acting over area section shown below(A'), which is oriented at angle 0 from the horizontal, as a function of 0 and vertical cross section A. b) Determine angle 0 where o=3 t. (24 points) A'=A/sin0 P 01 A (Results: o =- (sine)²,t = - sin0 cose,0 = 71.56°) %3D A А

1