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Get Full Access to University Physics - 13 Edition - Chapter 9 - Problem 37e
Get Full Access to University Physics - 13 Edition - Chapter 9 - Problem 37e

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# A compound disk of outside diameter 140.0 cm is made up of ISBN: 9780321675460 31

## Solution for problem 37E Chapter 9

University Physics | 13th Edition

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Problem 37E

A compound disk of outside diameter 140.0 cm is made up of a uniform solid disk of radius 50.0 cm and area density 3.00 g/cm2 surrounded by a concentric ring of inner radius 50.0 cm, outer radius 70.0 cm, and area density 2.00 g/cm2. Find the moment of inertia of this object about an axis perpendicular to the plane of the object and passing through its center.

Step-by-Step Solution:

Solution 37E Introduction We have to calculate the moment of inertia of the each section and then we can calculate the total moment of inertia by adding them. Step 1 At first let us calculate the moment of inertia of the inner disc. The moment of inertia of a thin disc is given by 2 Here, 1 3.00 g/cm is the area density and r =150 cm is the radius of the disc. Hence we have

Step 2 of 2

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