---
title: "Two uniform solid balls, one of radius \\( R \\) and mass \\( M \\), the other of radius \\( 2R \\) and mass \\( 8M \\), roll down a high incline. They start together from rest at the top of the incline. Which one will reach the bottom of the incline first?"
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url: "https://nerd-notes.com/ubq/29880/"
date_modified: "2025-03-14T04:31:21+00:00"
---

# Two uniform solid balls, one of radius \( R \) and mass \( M \), the other of radius \( 2R \) and mass \( 8M \), roll down a high incline. They start together from rest at the top of the incline. Which one will reach the bottom of the incline first?

Two uniform solid balls, one of radius \( R \) and mass \( M \), the other of radius \( 2R \) and mass \( 8M \), roll down a high incline. They start together from rest at the top of the incline. Which one will reach the bottom of the incline first?

- **A.** The large sphere arrives first.
- **B.** The small sphere arrives first.
- **C.** Both reach the bottom at the same time.
- **D.** More information is needed to tell.

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/29880/*