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The schematic diagram of a centrifugal governor is shown in Fig. 2.70. The length of each rod is l, the mass of each ball is m, and the free length of the spring is h. If the shaft speed is ω determine the equilibrium position and the frequency for small oscillations about this position.
Perform experiments to determine the accuracy of the temperature measurement. Interface three LEDs to TH TL TCOM outputs, and perform experiments to verify the temperature controller in the DS1620 is operating properly
a mass that weighs 8 lb stretches a spring 4 in. the mass is attached to a dashpot mechanism that has a damping
A gas mixture exists composed of 45% O2, 35% CO2 and 20% Ar on a molar basis. The pressure of the gas is 1 atm and the temperature is 50°F.
a boy throws a ball straight up from the top of a 12m tower. if the ball falls past him 0.75 s later determine the
A second-order differential equation x"+9x with initial conditions x(0) = 2 and x'(0) = 0. A first-order differential equation x' + 2x = e^-5t with no initial conditions ( x(0) = x'(0) = 0). Given the differential equation x"+ 6x = f, where f(t) is t..
Assume the volume flow rate, Q, over a weir is a function of the upstream water height, h, gravity g, and channel width, b. Use dimensional analysis to find the functional form of the dependence of Q upon the other variables.
The inner surface of a plane brick wall is at 40°C and the outer surface is at 20°C. Calculate the rate of heat transfer per m 2 of surface area of the wall, which is 250 mm thick. The thermal conductivity of the brick is 0.52 W/mK.
Two same objects with the same initial temperature Ti have a constant specific heat capacity of Cp, now one installs a refrigerator in between these two and tries to lower one of the objects temperatures to T2.
a big fireplace can be approximated as 1.5 m3 of volume. its made of firebrick with properties ? 2600 kgm3 and c 950
Find the average number of plates for the column.
Helium gas enters a nozzle, whose isentropic efficiency is 95 percent with a low velocity, and it exits at 14.4 psia, 160 degrees F, and 940 ft/s. determine the temperature and pressure at the nozzle inlet.
the velocity of the package sliding down the ramp at point a is 2.4 fts at the instant shown. knowing that the
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