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The plunger with mass M shown in Fig. 2.10-5 is free to move within an electromagnet. Although the winding of the electromagnet consists of many turns, only one is shown. The mechanical damping varies directly as the surface area of the plunger within the electromagnet,
(a) Write the voltage equation for the electric system,
(b) Write the dynamic equation for the mechanical system. Include the force of gravity,
(c) Express the mechanical damping D.
(d) Express the electromagnetic
force(e) Express the steady-state position x for a constant current flowing in the winding.
Hydrogen is contained in a piston-cylinder device at 14.7 psia and 15 ft3. At this state, a linear spring (Flux) with a spring constant of 15,000 lbf/ft is touching the piston but exerts no force on it. The cross-sectional area of the piston is 3 ft2..
Express q(t) as a Fourier series expansion.
temperature in state college pa on 31st december 2012 was 22 f. if the barometric pressure was 100 kpa and the humidity
a beam having the cross-section shown is subjected to the a vertical shear v.nbspdetermine a the horizontal line along
consider the steady operation of a refrigeration package for a shipping container on a train truck or ship. the package
Assume that a diaphyseal cross section carries a bending moment M. Let the cross section be circular with inner and outer diameter of 20 and 30 mm, respectively, and assume that the neutral axis (NA) passes through the centroid. Draw the cross sectio..
Determine the positions of static equilibrium and investigate the stability of the system at each position. Take the springs to be sufficiently long so that they remain effectively horizontal.
two 455000-lb locomotives pull 58 230000-lb coal hoppers cars. the train starts from rest and accelerates uniformly to
during calcination of limestone calcium carbonate is decomposed into lime and carbon dioxide. the rate of calcination
An moles of an ideal gas A ad (1-n) moles of an ideal gas B, each at 1 atm pressure, are mixed at total constant pressure. What ratio of A to B in the mixture maximizes the decrease in the Gibbs free energy of the system?
Determine the volume change, in ft^3, when 1 lbm of water, initially saturated liquid, is heated to saturated vapor while pressure remains constant at: Sketch a T-v diagram and indicate all relevant state points (eight total points).
in a quasi-equilibrium process in a closed system a gas expands from a volume of 0.15m3 and a pressure of 120kpa to a
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