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A machine, modeled as a linear spring-mass-damper system, is driven at resonance (ωn = ω = 2 rad/s).
Design a damper (that is, choose a value of c) such that the maximum deflection at steady state is 0.05 m. The machine is modeled as having a stiffness of 2000 kg/m, and the excitation force has a magnitude of 100 N.
a flue passing hot exhaust gases has a square cross section 300mm to a side. the walls are constructed of refractory
The Reynolds number for a particular micro channel flow is found to be Re = 2. If all channel dimensions (length, width, and height) are reduced by a factor of 10, and the time required for a particle to traverse the length of the channel is invarian..
The main elevator A of the CN Tower in Toronto rises about 349 m and for most of its run has a constant speed of 22 km/h. Assume that both the acceleration and deceleration have a constant magnitude of g/3 and determine the time duration t of the ..
a gas refrigeration system uses helium as the working fluid operates with a pressure ratio of 3.5. the temperature of
Consider an adiabatic mixing chamber operating at steady state into which steam enters with quality of 0.9. Water enters through a separate inlet at 30 C. At the exit the temperature is 150 C and mass flow rate is 2 kg/s. The pressure in the mixing c..
a rigid chamber contains 100 kg of water at 500 kpa 100 c. a paddle wheel stirs the water at 1000 rpm with a torque of
Determine the width w of the link BC needed so that the structure with load P = 20 kips has a factor of safety equal to 2.5. Link BC is ½ in thick and has a 85 ksi ultimate strength in tension.
piston having a diameter of 5.48 inches and a length of 9.50 in slides downward with a velocity v through a vertical
A cantilever 5 m long carries a uniformly distributed vertical load 480 N per metre from C from H, and a concentrated vertical load of 1000 N at its midlength, D. Construct the shearing force and bending moment diagrams.
a pump steadily draws water at a mass flow rate of 20 lbms through a piping arrangement. the pressure at the inlet is
a student takes a multiple choice exam with 10 questions each with 5 possible selections for the answer. suppose that
an aluminum rod is made in the form of a hollow square tube 2.25 in outside with a wall thickness of .120 in. its
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