1.A main cable in a large bridge is designed for a tensile forceof 2,600,000 lb. The cable consists of 1470 parallel wires, each0.16 in. in diameter. The wires are cold-drawn steel w/ anaverage ultimate strength of 230,000 psi. What factor of safety wasused in the design of the cable?
2.The brake pads for a bicycle tire are made of rubber. If a frictional force of 50 N is applied to each side of the tires, determine the average shear strain in the rubber. Each pad has cross sectional dimentions of 20 mm and 50 mm. Gr = 0.20 MPa
3.Molybdenum has a BCC crystal structure, an atomic radius of0.1363 nm, and an atomic weight of 95.94 g/mol. Compute andcompare its theoretical density with the experimental valuefound inside the cover.( experimental density is 10.22g/cm^3)