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An arrangement for pulling a pipe out of the ground is shown in the figure. A cable ABC is attached to the pipe at A and to the sturdy frame at C. A second cable BDE is then clamped to the first cable at B and attached to the frame at E. Finally, a man pulls vertically downward on the second cable at D with a force Q. The lengths of the cab les are such that AB is vertical, BD is horizontal, BC is inclined by a small angle β to the vertical, and DE is inclined by a small angle f3 to the horizontal. The effective cross-sectional area of the cable is denoted Ac.
(a) Obtain a formula for the tensile stress σab in cable AB.
(b) Calculate the stress aab and also the lifting force P in cable AB for Q = 445 N, α = 5°, β = 8°, and Ac = 77 mm2.
An ion exchange column is designed to "soften" water. In a particular application, the bed is filled with particles that are approximately spherical, with dp = 4 mm, and voidage epsilon = 0.30. The bed fills a cylinder with diameter 0.2 m, and is 1.0..
For the composite bar of Prob. 2.111, determine the residual stresses in the tempered-steel bars if P is gradually increased from zero to 98 kips and then decreased back to zero.
Determine the distance to the centroid C of the composite area shown in the figure.
steam enters the turbine in a vapor power plant at 1600 psia and 1000 degrees f state 1 and expands to a pressure of 1
Create a personal checklist (below) to demonstratemethods of simplification of series-parallel circuits. Your checklist should contain the following:
In an experiment, the temperature of a hot gas stream is to be measured by a thermocouple with a spherical junction. Due to the nature of this experiment, the response time of the thermocouple to register 99% of the initial temperature difference ..
explain the following terms with respect to 4-storke cycle internal combustion engines strokebore ratio piston
Suppose it is impossible to use an extensometer on the gauge section of a test specimen. Instead a butt-end specimen (Figure 3.2c) is used and the strain is computed from the cross-head movement.
Saturated water vapor at 230°F is sprayed into the moist air, which then exits the device at a relative humidity of 50%. Heat transfer between the device and its surroundings can be ignored, as can kinetic and potential energy effects. Determine t..
(a) Find the input-output relationship. (b) Determine whether the system is (i) memoryless, (ii) causal, (iii) linear, (iv) time inva riant, or ( v ) stable.
an exhaust fan in a building should be able to move 5 lbms air at 14.4 psia 68 f through a 1.25 ft diameter vent hole.
a four cylinder four stroke gasoline internal combustion engine has a bore of 9.4 cm and a stroke of 8.6 cm. the
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