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You want to find the moment of inertia of a complicated

University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman ISBN: 9780321675460 31

Solution for problem 43E Chapter 14

University Physics | 13th Edition

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University Physics | 13th Edition | ISBN: 9780321675460 | Authors: Hugh D. Young, Roger A. Freedman

University Physics | 13th Edition

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Problem 43E

You want to find the moment of inertia of a complicated machine part about an axis through its center of mass. You suspend it from a wire along this axis. The wire has a torsion constant of 0.450 N ? m/rad. You twist the part a small amount about this axis and let it go, timing 165 oscillations in 265 s. What is its moment of inertia?

Step-by-Step Solution:

Solution 43E The angular displacement of balance wheel of a watch which is vibrating with an angular amplitude ,angular frequency and phase angle =0 is given by the expression (t) = cos(t + ) =cos(t) (=0) Step 1 of 2 : The expression for angular velocity as a function of time can be found by taking the derivative of (t) with respect to time. (t) = cos(t) d dt = - sin(t) and the expression for angular acceleration as a function of time is computed as follows; 2 d ( d )= d 2 = - cos(t) dt dt dt

Step 2 of 2

Chapter 14, Problem 43E is Solved
Textbook: University Physics
Edition: 13
Author: Hugh D. Young, Roger A. Freedman
ISBN: 9780321675460

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