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The electric motor turns an eccentric flywheel which is equivalent to an unbalanced 0.25-lb weight located 10 in. from the axis of rotation.
If the static deflection of the beam is 1 in. due to the weight of the motor, determine the angular velocity of the flywheel at which resonance will occur. The motor weights 150 lb. Neglect the mass of the beam.
a 23 kg crate rests on a 10 kg hand cart as shown. the center of mass of the combined cratecart is at c. the cart is
a refrigerator consumes 280 w of electric power when it is running. the cost of electricity is 10 cents per kwh. what
the advance ratio j for a propeller is defined as jvnd where v is the velocity n is the propellers revolutions per
air enters a compressor at 179 kpa and 290 k and exits at a temperature of 500.9 k. determine the power kw for the
Consider 0.8 grams of air (which may be assumed to be an ideal gas) at 295 K and 1.5 bar trapped in a rigid tank. An electrical heater is operated for 30 seconds. During this time the voltage across the heater is 12 V and 0.6 amps pass through the re..
consider a 77.0-kg man standing on a spring scale in an elevator. starting from rest the elevator ascends attaining its
Derive the differential equations and boundary conditions for longitudinal vibrations of a uniform bar. Also obtain the appropriate Rayleigh quotient for such a problem.
consider an r-134a compressor on a refrigeration system. if the refrigerant enters as saturated vapor at 200 kpa 0.03
How much exhaust ventilation is required to maintain safety hazards below explosive levels?How much exhaust ventilation is required to maintain health hazards below OSHA-specified action levels?How many plant area room changes would be the level of..
you are given a task of compressing a fixed quantity of gas from P1,T1 to P2,T1. you wish to do this using a polytropic process coupled with a constant pressure P2 heat-transfer process. determine the polytropic process that minimizes the entropy ..
assuming that a silver-gold alloy is a random mixture of gold and silver atoms calculate the increase in entropy when
a pump accepts liquid water at 60 acircdegf and 14 psia and compresses it to a pressure of 100 psia. the pump has a
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