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A bronze sleeve, 0.040 in. thick, was mounted on a 2.000-in. diameter steel shaft by heating it to 100?C, while the temperature of the shaft was maintained at 20?C Under these conditions, the sleeve just ?t on the shaft with zero clearance. Find the principal stresses in the sleeve after it cools to 20?C. Assume that friction between the shaft and the sleeve prevents any sliding at the interface during cooling, and assume that the shaft is so massive and stiff that strains in the shaft itself are negligible. For the bronze, E = 16 × 106 psi, υ = 0.30, and α = 18.4 × 10-6 (?C)-1.
a refrigerant 134a at 140 kpa and -10 degree celcius is compressed by an adiabatic 16kw compressor to an exit state of
A 9º wedge is inserted using a force of 1000 lbs. The static coefficient of friction between the wedge and the log is 0.50. Determine the force required to pull the wedge out.
a rigid tank with volume 0.25 m3 contains 0.5 kg of water at 100 c. a 3 kw heater is energized. calculate the time
if it is raining steadily at a rate of one inch per hour a container with perpendicular sides and a flat bottom would
a projectile is launched with a speed v0 27.0 ms from the floor of a 4.3-m-high tunnel as shown. determine the maximum
Determine the shear stress, acting on plane AB and the principal stresses at the point and find the friction coefficient.
Definition of hyperbolic functions -
a 3000-lb car accelerates under constant power from 60 mileh to 90 mileh on a 0.25 mile straight level test track.
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a piston-cylinder device contains 01.440 kg of refrigerant-134a at -10 degrees celsius. the piston that is free to move
a window air conditioner that consumes 1 kw of electricity when running has a coefficient of performance of 3 is placed
a rocket is launched from the ground in vertical direction. but its engine failed at the moment the rocket has reached
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