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A bracket with pulleys for positioning magnetic tape in an electronic data storage device is shown. The pulleys are frictionless, the tape supports a force T = 2 N, and the thickness of the tape can be neglected.
(a) Use the two tape forces in Fig. P4.48(a) to compute the resultant couple moment.
(b) Replace the forces on the two pulleys with point forces on the pinions as shown in Fig. P4.48(b), and compute the resultant couple moment (replacement of pulley forces by bearing forces is discussed in Chapter 3 in connection with Fig. 3.9).
an air intake duct has a 14x14 opening the duct is 18 long with an exaust opening at the other end that is 14x1 giving
After a time of 6.52 min the mole fraction of CO2 in the upper tube is 0.0912. Calculate the value of the diffusion coefficient.
Determine the magnitude and direction of the anchoring force needed to hold the horizontal elbow and nozzle combination shown in Fig. P5.47 in place.
A 325-lb block rests on a plane inclined 25° with the horizontal. Calculate the coefficient of static friction between the block and the plane if motion impends when a force of 225 lb, parallel to the plane, is applied. The impending motion is up ..
Determine the heat transfer characteristics of a cylinder under cross flow conditions when the cylinder is isolated.
For these tests the viscosity of the water was 2.3x10-5 lbf s/ft2 and the water density was 1.94 slug/ft3. Estimate the drag on an 8-ft-diameter balloon moving in air at a velocity of 3 ft/s. Assume the air to have a viscosity of 3.7x10-7 lbf s/ft..
Find the concentration of aluminum in a solution that exhibits a rate of 0.76 absorbance units per second under the same experimental conditions.
Calculate the change in velocity required in changing the position of a satellite in an orbit by 90 degrees. The initial and final orbit is circular around the Earth with a 15000 km radius. Calculate the delta velocity, semi-major axis and period for..
For an initial plate temperature of Ti = 300°C, what is the rate of heat transfer from the plate? What is the corresponding rate of change of the plate temperature? The velocity of the air is much larger than that of the plate.
the stators in a gas turbine are designed to increase the kinetic energy of the gas passing through them adiabatically.
After the operation, the diameter of the grinding wheel has been reduced to 149.75 mm. Determine the grinding ratio in this operation.
Prepare a computer algorithm that determines the alternate depth, given the geometry of a prismatic channel, the discharge, and the depth of flow. Use the interval-halving technique or a solution of your choice.
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