---
title: "Four forces are exerted on a disk of radius \\( R \\) that is free to spin about its center, as shown above. The magnitudes are proportional to the length of the force vectors, where \\( F_1 = F_4 \\), \\( F_2 = F_3 \\), and \\( F_1 = 2F_2 \\). Which two forces combine to exert zero net torque on the disk?"
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url: "https://nerd-notes.com/ubq/81024/"
date_modified: "2025-03-13T12:15:24+00:00"
---

# Four forces are exerted on a disk of radius \( R \) that is free to spin about its center, as shown above. The magnitudes are proportional to the length of the force vectors, where \( F_1 = F_4 \), \( F_2 = F_3 \), and \( F_1 = 2F_2 \). Which two forces combine to exert zero net torque on the disk?

Four forces are exerted on a disk of radius \( R \) that is free to spin about its center, as shown above. The magnitudes are proportional to the length of the force vectors, where \( F_1 = F_4 \), \( F_2 = F_3 \), and \( F_1 = 2F_2 \). Which two forces combine to exert zero net torque on the disk?

![Diagram](https://nerd-notes.com/wp-content/uploads/2025/03/nettorqueonwheelbyfivedifferntforces-300x284.png)

- **A.** \( F_1 \)
- **B.** \( F_2 \)
- **C.** \( F_3 \)
- **D.** \( F_4 \)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/81024/*