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A bridge is found to vibrate violently when a vehicle, producing a harmonic load of magnitude 600 N, crosses it. By modeling the bridge as an undamped spring-mass system with a mass 15,000 kg and a stiffness 2 MN/m, design a suitable tuned damped vibration absorber. Determine the improvement achieved in the amplitude of the bridge with the absorber.
What are the strategic options for legacy system evolution? When would you normally replace all or part of a system rather than continue maintenance of the software?
For the system shown below. Note that there is a circulation flow from Tank 2 to Tank 1 at a flow rate of qm = (alpha)qo.a. Develop a model of the two liquid tanks in the system below. The inflow rate is given by qmi(t).
Why is the low-temperature endotherm for ambient pressure in Figure 31-10 found at the same temperature as that at 13.79 bar, whereas the high-temperature peaks for the two pressures are found at different temperatures?
an air standard brayton closed cycle receives air at 1 atm and 298 k. the upper temperature and pressure limits are 5
in cooling situations where the desired temperature range is large two refrigeration cycles can be stacked to create a
a four-cylinder four-stroke 2.2-l gasoline engine operates on the otto cycle with a compression ratio of 10. the air is
thirty units were placed on test in order to estimate the reliability of the shift driver over a 200 operating hour
Calculate the magnitude of the normal and shearing stresses in a plane oriented at
A piston-cylinder device containing .1 Kg of saturated liquid water, initially at 1 bar, is heated at constant pressure until the temperature is 140C. an electrical heater within the device is turned on and is allowed to pass a current for 5 min from..
the sun is approximated as a spherical black body with a surface temperature of 5762 k. the irradiation from the sun as
A solid circular shaft made of 304 stainless steel uniformly tapers from a diameter of 1.5 inches to a diameter of 1.0 inches over a length of 3 feet. Objective: If the shaft transmits 100 hp at 2000 RPM, determine the maximum shear stress in the sha..
A ship A is travelling at a speed of 30 km h 1 in a direction 60 ° south of east. A second ship B is sighted which is travelling at 20 km h 1 in a direction 30 ° east of north. What is the apparent velocity of ship B when viewed from ship A?
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