A walkway suspended across a hotel lobby is supported at numerous points along its edges by a vertical cable above each point and a vertical column underneath. The steel cable is 1.27 cm in diameter and is 5.45 m long before loading. The aluminum column is a hollow cylinder with an inside diameter of 16.14 cm, an outside diameter of 16.24 cm, and unloaded length of 3.25 m. When the walkway exerts a load force of 8,400 N on one of the support points, how much does the point move down? mm

A 2×12 board of airdried Southern Yellow Pine (~12% moisture) is about 2.18 kg per linear foot. A physicist and his wife carry a 16-foot length of Southern Yellow Pine lumber, the physicist gallantly carries the board from one end while his wife carries the board 4 feet from the other end. How much weight is each spouse carrying? This is an equilibrium problem. Assume the board is perfectly uniform.

Many caterpillars construct cocoons from silk, one of the strongest naturally occurring materials known. Each thread is typically 2.0 µm in diameter, and the silk has a Young's modulus of 4.0 x 10° N/m2. Assuming that there is no appreciable space between the parallel strands, how many strands N would be needed to N = strands make a rope 8.6 m long that would stretch only 1.02 cm when supporting a pair of 85-kg mountain climbers? Again assuming that there is no appreciable space between the parallel strands, what would be the diameter d of the rope? d = cm

After an unfortunate accident occurred at a local warehouse, you were contracted to determine the cause. A jib crane collapsed and injured a worker. An image of this type of crane is shown in the figure.The horizontal steel beam had a mass of 88.50 kg per meter of length, and the tension in the cable was T = 12560 N. The crane was rated for a maximum load of P 500 kg. If d = 5.000 m, s = 0.558 m, x = 1.050 m, and h = 1.980 m, what was the magnitude of W1 (the load on the crane) before the collapse? The acceleration due to gravity is g = 9.810 m/s². 444.23 Wi = N Incorrect What was the magnitude of force Fp at the attachment point P? Fp = N