Engineering, 13.04.2021 03:30 anggar20
This is a project you can do if you have a bike pump or a syringe (no needle!). When the pump handle is fully-extended, the cylinder of a hand-held bike pump has a volume of 2.0 in^3 . If a person holds their thumb over the exit hole (no needles!) and push on the pump handle to compress the air you can increase the pressure in the cylinder. Let us presume that a pressure of 45 lbf/in^2.
Atmospheric pressure is 14.7 psi and the outside temperature is 100 degF.
a. Determine the final volume and the final temperature of the gas if the process is done slowly (about 1 hour)
b. Determine the final volume and the final temperature of the gas if the process is done quickly (about 1 second)
c. Be certain to identify and list any assumptions that are needed to answer these questions
Answers: 3
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Aloaded platform of total mass 500 kg is supported by a dashpot and by a set of springs of effective stiffness 72 kn/m. it is observed that when the platform is depressed through a distance x = 12.5 cm below its equilibrium position and then released without any initial velocity; it reaches its equilibrium position in the shortest possible time without overshoot. find the position and velocity of the loaded platform 0.10 sec. after its release. if a further load of 400 kg is added to the platform, find, i) the frequency of damped vibrations, and i) the amplitude of vibration after 2 complete oscillations, given that the initial amplitude is 15 cm.
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This is a project you can do if you have a bike pump or a syringe (no needle!). When the pump handle...
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