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Get Full Access to Physics: Principles With Applications - 6 Edition - Chapter 8 - Problem 19q
Get Full Access to Physics: Principles With Applications - 6 Edition - Chapter 8 - Problem 19q

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# Two spheres look identical and have the same mass.

ISBN: 9780130606204 3

## Solution for problem 19Q Chapter 8

Physics: Principles with Applications | 6th Edition

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Problem 19Q

Problem 19Q

Two spheres look identical and have the same mass. However, one is hollow and the other is solid. Describe an experiment to determine which is which.

Step-by-Step Solution:

Step-by-step solution

Step 1 of 1

Let the spheres spin on the table. The sphere which spins at a lower rate will be the hollow sphere. This is because in a hollow sphere, the air inside tries to get away from the axis of rotation. Therefore its moment of inertia increases causing reduction in angular velocity.

As the torque is constant (torque = moment of inertia x angular velocity) for both the spheres; hence in case of a solid sphere, it will rotate more or less like a rigid body with a greater angular velocity.

Step 2 of 1

##### ISBN: 9780130606204

This textbook survival guide was created for the textbook: Physics: Principles with Applications, edition: 6. Since the solution to 19Q from 8 chapter was answered, more than 377 students have viewed the full step-by-step answer. Physics: Principles with Applications was written by and is associated to the ISBN: 9780130606204. The full step-by-step solution to problem: 19Q from chapter: 8 was answered by , our top Physics solution expert on 03/03/17, 03:53PM. The answer to “Two spheres look identical and have the same mass. However, one is hollow and the other is solid. Describe an experiment to determine which is which.” is broken down into a number of easy to follow steps, and 26 words. This full solution covers the following key subjects: describe, determine, experiment, Hollow, however. This expansive textbook survival guide covers 35 chapters, and 3914 solutions.

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Two spheres look identical and have the same mass.