Answered: Figure P8.41

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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An approximate model for
a ceiling fan consists of a
cylindrical disk with four
thin rods extending from
the disk’s center, as in Figure
P8.41. The disk has mass
2.50 kg and radius 0.200 m.
Each rod has mass 0.850 kg
and is 0.750 m long. (a) Find
the ceiling fan’s moment of
inertia about a vertical axis through the disk’s center. (b) Friction
exerts a constant torque of magnitude 0.115 N ? m on the
fan as it rotates. Find the magnitude of the constant torque
provided by the fan’s motor if the fan starts from rest and takes
15.0 s and 18.5 full revolutions to reach its maximum speed.

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