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Critically damped oscillator If the damping constant of a free oscillator is given by γ = 2ω0, the system is said to be critically damped. (a) Show by direct substitution that in this case the motion is given by
where A and B are constants. (b) A critically damped oscillator is at rest at equilibrium. At t = 0 it is given a blow of total impulse I. Sketch the motion, and find the time at which the velocity starts to decrease.
the shaft consists of two sections with 8.5 knm of torque applied clockwise at the joint. the left steel section has a
steam flows through a small steam turbine at the rate of 10000 kgh entering at 600oc and 2.0 mpa and emerging at 0.01
discuss how the steam power plant steam engine rankine cycle can control the speed of the vehicle during acceleration
The particle p moves along a space curve describe by the Cartesian coordinates. Describe the given motion in terms of cylindrical and spherical coordinates by finding explicit equations for the coordinates.
A vacuum gage connected to a chamber reads 35 kPa at a location where the atmospheric pressure is 92 kPa. Determine the absolute pressure in the chamber.
a wheel can be modeled as a thin ring having mass 10 kg and four spokes made of slender rods each of mass 2 kg. the
an electric hot plate is maintaned at a temperature of 350 and is used to keep the solution just boiling at 95. the
The bearings are 1 m apart. The shaft rotates at 2400 rpm. If the centre of mass of the rotor is 0.11 mm away from the geometric centre of the rotor due to certain manufacturing defect, find the amplitude of the steady-state vibration and the dyna..
The GE J-79 turbo jet produces a thrust of 10,000lbs at sea level. The inlet diameter is 3.19 ft. If an airplane equipped with the J79 is flying at standard sea level with a velocity of 1,000 ft/sec, estimate the jet velocity relative to the airplane..
refrigerant 134a at 700 kpa and 40oc is expanded adiabatically in a closed system to 60 kpa. determine the work
The main bearing of a steam engine is 100 mm in diameter and 175 mm long.the bearing support a load of 28 kn at 250 r.p.m.if the ratio of the diametral clearance to the diameter is 0.001 and the absolute viscosity of the lubricating oil is 0.015 kg/m..
Derive an equation to determine the extent of heat transfer enhancement due to wetting. Evaluate the enhancement for V = 10 m/s, D = 10 mm, Ts = 320 K, and Too = 300 K.
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