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A Pitot tube on a high-altitude aircraft measures a differential pressure of 180 Pa. What is the aircraft's airspeed if the density of the air is 0.031kg/m3?
A Pitot tube (Figure) is used to determine the airspeed of an airplane. It consists of an outer tube with a number of small holes B (four are shown)
Three forces are applied to a bracket. The directions of the two 30-lb forces can vary, but the angle between these forces is always 50°.
Three forces and a couple act on crank ABC. For P = 25 N and a = 40°
Three hikers are shown crossing a footbridge. Knowing that the weights of the hikers at points C, D, and E are 200 lb, 175 lb, and 135 lb, respectively
Three gears A, B, and C are pinned at their centers to rod ABC. Knowing that end A of rod ABC is fixed and that gear A does not rotate
Three rods of lengths a = 240 mm, 200mm b = 200mm, and c = 180 mm are welded together to form the component shown
Three loads are applied as shown to a light beam supported by cables attached at B and D. Knowing that the maximum allowable tension in each cable
Three loads are suspended as shown from cable ABCDE. Knowing that 12 dC = ft, determine
The two blocks shown are released from rest at time t = 0. Neglecting the masses of the pulleys and the effect of friction in the pulleys and between the blocks
The two blocks shown are released from rest. Neglecting the masses of the pulleys and the effect of friction in the pulleys
The two shafts a speed-reducer unit are subjected to couples of magnitude M1 = 18 N · m and M2 = 7.5 N · m, respectively.
The weight and radius of friction disk A are WA = 12 lb and rA = 6 in.; the weight and radius of friction disk B are WB = 6 lb and rB = 4 in
The vise shown consists of two members connected by two double-threaded screws of mean radius 6 mm and pitch 2 mm
The velocities of two steel blocks before impact are as shown. If after impact the velocity of block B is observed to be 2.5 m/s to the right
The V pulleys A and B have diameters of 4 in. and 8 in., respectively, and are connected by a V belt for which a =36°.
Three belts move over two pulleys without slipping in the speed reduction system shown. Point A on the input belt moves to the right with a constant speed
The weights of blocks A, B, and C are WA = WC = 20 lb, and B W = 10 lb. Knowing that P = 50 lb and neglecting the masses of the pulleys
Three brass plates are brazed to a steel pipe to form the flagpole base shown. Knowing that the pipe has a wall thickness of 0.25 in.
The two-dimensional motion of a particle is defined by the relations r = 2 B cos(At/2B) and ?= At/ 2B, where r is expressed in meters, t in seconds,
The value of the acceleration of gravity at any latitude f is given by g = 9.7087(1 + 0.0053 sin2 f) m/s2, where the effect of the rotation of tbhye earth
Skid marks on a drag race track indicate that the rear (drive) wheels of a car skid for the first 18 m and roll with slipping impending during the remaining 382
Small wheels attached to the ends of rod AB roll along two surfaces. Knowing that at the instant shown the velocity vA of wheel A is 4.5 ft/s to the right
Slider block B starts from rest and moves to the right with a constant acceleration on of 1ft/s2.
Slider block B moves to the right with a constant velocity of 12 in./s. Determine