Chapter 6, Problem 9RQE

F12-45. Car A is traveling with a constant speed of 80 km/h due north, while car B is traveling with a constant speed of 100 km/h due east. Determine the velocity of car B relative to car A. pload Choose a File Question 5 VA - WB VBA V100 111413 + *12-164. The car travels along the circular curve of radius r = 100 ft with a constant speed of v = 30 ft/s. Determine the angular rate of rotation è of the radial liner and the magnitude of the car's acceleration. Probs. 12-163/164 pload Choose a File r = 400 ft 20 pts

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P6.16 A compound shaft (Figure P6.16) consists of a titanium alloy [G= 6,200 ksi] tube (1) and a solid stainless steel [G= 11,500 ksi] shaft (2). Tube (1) has a length L₁ = 40 in., an outside diameter D₁ = 1.75 in., and a wall thickness t₁ = 0.125 in. Shaft (2) has a length 42 = 50 in. and a diameter d₂ = 1.25 in. If an external torque TB = 580 lb ft acts at pulley B in the direction shown, calculate the torque Tcrequired at pulley C so that the rotation angle of pulley Crelative to A is zero. B Te (2) TB (1) FIGURE P6.16

7.43 Neglecting head losses, determine what horsepower the pump must deliver to produce the flow as shown. Here, the elevations at points A, B, C, and D are 124 ft, 161 ft, 110 ft, and 90 ft, respectively. The nozzle area is 0.10 ft². B Nozzle Water C Problem 7.43

A 1.8m x 1.8m footing is located at a depth of 1 m below the ground surface in a deep deposit of compacted sand (f'= 33 , f' = 28 , γ = 17.5 kN/m). Calculate the ultimate net bearing capacity considering several factors (e.g., shape, depth, and inclination) when the groundwater table is located (a) at 5 m below the footing base, (b) at the ground surface, (c) at the footing base, and (d) at 1.5 m below the footing base. Also, explain the effects of the groundwater levels in the bearing capacities of the footing with your own words. If the information is not given for the calculation, please assume it reasonably.

7.18 Determine the discharge in the pipe and the pressure at point B. Neglect head losses. Assume α = 1.0 at all locations. 1.5 m Water B 3.5 m 40 cm diameter -20 cm diameter nozzle Problem 7.18

A 200-lb block is at rest on a 30° inclined plane. The coefficient of friction between the block and the inclined plane is 0.20. Compute the value of a horizontal force P that will cause motion to impend the block up the inclined plane. 200 lb P 30°