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Collar D is released from rest in the position shown and is stopped by a small plate attached at end C of the vertical rod ABC. Determine the mass of the collar for which the maximum normal stress in portion BC is 125 MPa.
a disk cam rotates at a constant speed of 300 rpm and drives a translating roller follower through a rise of 1.5 inches
A rigid tank contains water vapor at 200 degrees celcius and unknown pressure. When the tank is cooled to 150 degrees celcius, the vapor starts condensing. Estimate the initial pressure in the tank.
a cast-iron bar 2 in. in diameter and 5 ft. long is surrounded by a shell of structural steel 0.25 in thick. compute
Water flows in a 2 ft diameter duct under the following conditions: p1= 55 psia and v1=20ft/sec. At another section 12 ft below the first the diameter is 1 ft and the pressure p2=40 psia. Compute the frictional losses between these two sections. Dete..
Nitrogen gas (N2) undergoes a process from p1 = 10 bar, T1 = 300 K to p2 = 12 bar, T2 = 1000 K. Assuming ideal gas behaviour, determine the change in specific entropy, in kJ/(kg K), assuming:
2 blocks of rubber with a modulus of rigidity g12 mpa are bonded to rigid supports and to a plate ab. knowing the
if the isentropic efficiency of the compressor is 72 and the pressure ratio is 2.21 for an inlet pressure and
5 kg of steam contained within a piston-cylinder assembly undergoes an expansion from state 1 where the specific
two 455000-lb locomotives pull 58 230000-lb coal hoppers cars. the train starts from rest and accelerates uniformly to
A food processing facility makes sweetened iced tea by feeding 1.00 kg H2O/min of water along with m1 kg of dry tea leaves/min into a brewer. From there, the leaves and water enter a filter that separates m2 kg of wet tea leaves/min from unsweetened ..
a piston-cylinder device containing air undergoes a polytropic compression process from 2 liters 300 kpa and 20 degc to
a medical warmer operates using a heat pump. saturated r-12 enters the compressor at a temperture of -10 c and exits as
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