Engineering, 25.02.2020 17:23, destineenikole17
To ensure that doors return to their closed positions, springs are commonly attached to them. However, with this spring the door may swing back and forth several times. For this problem, analyze a door 1 meter wide and 2.25 meters tall, with a mass of 22.7 kg (50 lbm). The mass moment of inertia of the door about its hinge axis is calculated to be 7.57 kg-m2.
a) Draw the free body diagram for this system and derive the equation of motion for the door and spring system. We will analyze the response of the door when subjected to a short, hard push which can be modelled as a unit impulse. Include this pushing force in your EOM.
Answers: 2
Engineering, 04.07.2019 18:20, hayleymckee
Steam enters a converging nozzle at 3.0 mpa and 500Β°c with a at 1.8 mpa. for a nozzle exit area of 32 cm2, determine the exit velocity, mass flow rate, and exit mach number if the nozzle: negligible velocity, and it exits (a) is isentropic (b) has an efficiency of 94 percent
Answers: 2
Engineering, 04.07.2019 19:10, nayi2002
The short distance from the objective lens to the object causes problems at high magnification. which of the following is the most serious? a. cleaning the object surface b. positioning the object c. reflection from the object surface. d. illumination of the object
Answers: 1
To ensure that doors return to their closed positions, springs are commonly attached to them. Howeve...
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