---
title: "A light cord is wrapped around the outer rim of a circular pulley of radius \\(0.30\\text{ m}\\) mounted on a fixed frictionless horizontal axle. A constant tension force of magnitude \\(20\\text{ N}\\) is exerted tangentially on the cord as the pulley rotates through an angular displacement of \\(5.0\\text{ rad}\\). How much work is done by the tension force on the pulley during this displacement?"
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/120873/"
date_modified: "2026-08-23T04:43:58+00:00"
---

# A light cord is wrapped around the outer rim of a circular pulley of radius \(0.30\text{ m}\) mounted on a fixed frictionless horizontal axle. A constant tension force of magnitude \(20\text{ N}\) is exerted tangentially on the cord as the pulley rotates through an angular displacement of \(5.0\text{ rad}\). How much work is done by the tension force on the pulley during this displacement?

A light cord is wrapped around the outer rim of a circular pulley of radius \(0.30\text{ m}\) mounted on a fixed frictionless horizontal axle. A constant tension force of magnitude \(20\text{ N}\) is exerted tangentially on the cord as the pulley rotates through an angular displacement of \(5.0\text{ rad}\). How much work is done by the tension force on the pulley during this displacement?

- **A.** \(6.0\text{ J}\)
- **B.** \(15\text{ J}\)
- **C.** \(30\text{ J}\)
- **D.** \(100\text{ J}\)

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/120873/*