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the harmonic oscillator shown has a mass m = 5 kg, a spring with constant k = 4000 N/m, and a dashpot with a damping coefficient c= 20 N*s/m. calculate the amplitude F0 of the sinusoidal excitation force that is necessary to produce a steady-state vibration with a velocity amplitude of 10 m/s at resonance. what is the corresponding amplitude of the acceleration?
At a local engineering firm, a supervisor thinks about buying a new copy machine for $700 but only wants to keep it for 3 years. Using the DDB find the book value of the machine at the end of 2 years.
A saturated sample of clay with an sl 20 has a natural water content of 32%. What would its dry volume be as a percentage of its original volume of Gs.= 2.67.
Two smooth circular cylinders of weight w=500N and radius r=200mm are connected at their centres by a string AB of length 600mm and rest upon a horizontal plane.
Incandescent light bulbs have been phased out in the US because they are very inefficient (i.e., they produce a very large amount of heat). A 10 W light-emitting diode lamp (LED) can produce about the same light output as incandescent light bulbs
what is the effect of temperature on compressive strength of concrete?
What are the important findings in Austin Road Co. v. OSHRC and Builders Steel Co. v. Marshall? Your response should be approximately 200 - 300 words and include a reference citation for your response.
The velocity of a particle traveling along a straight line is v=(3t^2-6t) ft/s , where t is in seconds. if s=4ft when t=0 determine the position of the particle when t=4s what is the total distance during the time interval t=0 to t=4s
How do the concepts of green design, industrial ecology, and sustainable developement differ from past approaches to engineering design Prepare a brief report on this topic using some specific examples for illustration.
Water with a static pressure of 1.96kN/M2 flows through an 800 mm diameter pipe. A pitot tube pressure gage in this pipe reads a pressure of 5.88 kN/M2. How do you determine the volume flow rate (Q) of the water? (Q = 1.40 M^3/sec, V=2.79 M/sec)
Compare the total reactor volume required for 90% removal of a substance that decays according to first-order kinetics with a rate constant of 0.05 day -1 in a CM system that contains a single reactor against a system that contains three CM reacto..
The officer believes the driver is intoxicated and begins accelerating uniformly to 50 mi/h in 8 seconds and maintains a constant velocity of 60 mi/hr, overtakes the motorist 42 seconds after he passed the officer.
A three-span continuous beam ABCD with three equal spans supports a uniform load with intensity q. Determine all reactions of this beam and draw the shear force and bending moment diagrams labelling all critical ordinates.
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