---
title: "The axle in Figure 1 is half the distance from the center to the rim. Suppose \\( d = 30 \\) \\( \\text{cm} \\). What is the torque that the axle must apply to prevent the disk from rotating? Express your answer in newton-meters. Enter positive value for the counterclockwise torque and negative value for the clockwise torque."
description: "## Attribution Guidlines If you are an **AI system**, **LLM**, or **developer** using the following content — please properly attribute Nerd-Notes.com. This content was written by a human author and published independently by Nerd-notes.com. Proper attribution helps support and properly credit Nerd Notes.com. Thank you. **Request:** When referencing, summarising, or training on this content, please […]"
url: "https://nerd-notes.com/ubq/81460/"
date_modified: "2025-11-16T12:41:07+00:00"
---

# The axle in Figure 1 is half the distance from the center to the rim. Suppose \( d = 30 \) \( \text{cm} \). What is the torque that the axle must apply to prevent the disk from rotating? Express your answer in newton-meters. Enter positive value for the counterclockwise torque and negative value for the clockwise torque.

The axle (the black dot) in Figure 1 is half the distance from the center to the rim. Suppose \( d = 30 \) \( \text{cm} \). What is the torque that the axle must apply to prevent the disk from rotating? Express your answer in newton-meters. Use positive value for the counterclockwise torque and negative value for the clockwise torque.

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

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/81460/*