---
title: "Two spheres of equal size and equal mass are rotated with an equal amount of torque. One of the spheres is solid with its mass evenly distributed throughout its volume, and the other is hollow with all of its mass concentrated at the edges. Which sphere would rotate faster?"
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url: "https://nerd-notes.com/ubq/39505/"
date_modified: "2025-10-25T01:38:14+00:00"
---

# Two spheres of equal size and equal mass are rotated with an equal amount of torque. One of the spheres is solid with its mass evenly distributed throughout its volume, and the other is hollow with all of its mass concentrated at the edges. Which sphere would rotate faster?

Two spheres of equal size and equal mass are rotated with an equal amount of torque. One of the spheres is solid with its mass evenly distributed throughout its volume, and the other is hollow with all of its mass concentrated at the edges. Which sphere would rotate faster if the same amount of torque is applied for the same period of time for both?

 

![Diagram](https://nerd-notes.com/wp-content/uploads/2024/06/11.png)

- **A.** Solid sphere
- **B.** Hollow sphere
- **C.** They would rotate at equal rates.
- **D.** Additional information is required to determine the relative rates of rotation.

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/39505/*