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0 = 0° A

0 = 0° A

Elements Of Electromagnetics
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Formula Sheet Calculator 0 = 90° -- 0 = 0° A A'
Transcribed Image Text:Formula Sheet Calculator 0 = 90° -- 0 = 0° A A'
A rotator platform supports a large uniform cylindrical solid of 5346 kg, radius = 0.75 m and length = 2.5 m. Electric motors exert a 40 Nm torque about the axis A-A. What is the time required to move the cylinder from its stow-a-way position (0 = 0 degrees) to its deployed position (0 = 90 degrees)? Take the moment of inertia I to be (1/3)ML². For the first 45 degrees of rotation, motor torque is applied. During the next 45 degrees of rotation, the torque is reversed in order to bring the cylinder to rest at the deployed position. (PUHQ121) a) 033.46 seconds b) 041.83 seconds c) O20.91 seconds d) O11.15 seconds
Transcribed Image Text:A rotator platform supports a large uniform cylindrical solid of 5346 kg, radius = 0.75 m and length = 2.5 m. Electric motors exert a 40 Nm torque about the axis A-A. What is the time required to move the cylinder from its stow-a-way position (0 = 0 degrees) to its deployed position (0 = 90 degrees)? Take the moment of inertia I to be (1/3)ML². For the first 45 degrees of rotation, motor torque is applied. During the next 45 degrees of rotation, the torque is reversed in order to bring the cylinder to rest at the deployed position. (PUHQ121) a) 033.46 seconds b) 041.83 seconds c) O20.91 seconds d) O11.15 seconds
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