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MCS,PHD
Argosy University/ Phoniex University/
Nov-2005 - Oct-2011
Professor
Phoniex University
Oct-2001 - Nov-2016
Code the following engineering problems in python:
Part 1) The flywheel of a steam engine has a radius of gyration of 1 m and mass 2500 kg. The starting torque of the steam engine is 1500 N-m and may be assumed constant.
Determine : 1. Angular acceleration of the flywheel, and
2. Kinetic energy of the flywheel after 10 seconds from the start.
Part 2)
A winding drum raises a cage of mass 500 kg through a height of 100 metres. The mass of the winding drum is 250 kg and has an effective radius of 0.5 m and radius of gyration is 0.35 m. The mass of the rope is 3 kg/m.
The cage has, at first, an acceleration of 1.5 m/s2 until a velocity of 10 m/s is reached, after which the velocity is constant until the cage nears the top and the final retardation is 6 m/s2. Find
1. The time taken for the cage to reach the top,
2. The torque which must be applied to the drum at
starting; and
3. The power at the end of acceleration period.
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