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It has been found that a printing press, of mass 300 kg and operating speed 3000 rpm, produces a repeating force of 30,000 N when attached to a rigid foundation. Find a suitable viscously damped isolator to satisfy the following requirements:
(a) the static deflection should be as small as possible;
(b) the steady-state amplitude should be less than 2.5 mm;
(c) the amplitude during start-up conditions should not exceed 20 mm; and (d) the force transmitted to the foundation should be less than 10,000 N.
Water flows at a rate of .04 m^3/s in a .12 meter diameter pipe that contains a sudden contraction to a .06 m pipe. Determine the pressure drop across the contraction section. How much of this pressure difference is due to losses and how much is due ..
If the building and storm windows are at 20 and -10oC, respectively, what is the rate of heat loss by free convection across the air space?
1. Find the transfer function G(S) in terms of velocity v(t) and engine forward force f(t) for the Truck below. The cart mass is m. The truck mass is M. The damper Coefficient is b. The spring constant is k.
In the other stream, Refrigerant 134a enters at 14 bar, 80°C with a mass flow rate of 5 kg/min and exits as saturated liquid at 52°C. Heat transfer from the outer surface of the heat exchanger can be ignored. Determine the mass flow rate of the li..
consider a sample of pure nickel in the shape of a coin. the area of the flat face is 1 cm2 and the initial thickness
a mass of 3kg of nitrogen at 100kpa and 20oc is contained in a piston-cylinder device. it is now expanded to a final
a spherical bowling ball of mass m 7 kg and radius r 0.2m is projected along a horizontal bowling alley surface mu
water at standard atmospheric pressure and temperature fills a sealed rigid container. if the temperature of the water
Determine an expression for the ratio of the heat transfer coefficient averaged over the N tubes, each experiencing a combined entrance process, to the heat transfer coefficient averaged over the single tube, hD,N /hD,1.
The rod is stress free at room temperature [20(C (68(F)]; and upon cooling to -40(C (-40(F), a maximum thermally induced tensile stress of 125MPa (18,125psi) is possible. Of which of the following metals or alloys may the rod be fabricated: alumin..
Determine the steady-state amplitude of the absorber mass.
carbon tetrachloride s.g. 1.60 flows through a 3-in radius pipe. the differential gage attached to the pitot static
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