Consider a string that rotates around the end of a motor. The string has length L = 0.20m and mass M = 0.015 kg. What (constant) torque must the motor exert on the string for it to bring it from rest to full speed in 0.50 s? Full speed is 1200rpm. Igore wind resistance. The moment of inertia for motion of a rod about the end is I=1/3ML^2.

Consider a string that rotates around the end of a motor. The string has length L = 0.20m and mass M = 0.015 kg. What (constant) torque must the motor exert on the string for it to bring it from rest to full speed in 0.50 s? Full speed is 1200rpm. Igore wind resistance. The moment of inertia for motion of a rod about the end is I=1/3ML^2.

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter16: Oscillations

Section: Chapter Questions

Problem 76PQ

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