---
title: "Three masses are attached to a \\( 1.5 \\, \\text{m} \\) long massless bar. Mass 1 is \\( 2 \\, \\text{kg} \\) and is attached to the far left side of the bar. Mass 2 is \\( 4 \\, \\text{kg} \\) and is attached to the far right side of the bar. Mass 3 is \\( 4 \\, \\text{kg} \\) and is attached to the middle of the bar. At what distance from the far left side of the bar can a string be attached to hold the bar up horizontally?"
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url: "https://nerd-notes.com/ubq/39430/"
date_modified: "2025-03-07T08:14:50+00:00"
---

# Three masses are attached to a \( 1.5 \, \text{m} \) long massless bar. Mass 1 is \( 2 \, \text{kg} \) and is attached to the far left side of the bar. Mass 2 is \( 4 \, \text{kg} \) and is attached to the far right side of the bar. Mass 3 is \( 4 \, \text{kg} \) and is attached to the middle of the bar. At what distance from the far left side of the bar can a string be attached to hold the bar up horizontally?

Three masses are attached to a \( 1.5 \, \text{m} \) long massless bar. Mass 1 is \( 2 \, \text{kg} \) and is attached to the far left side of the bar. Mass 2 is \( 4 \, \text{kg} \) and is attached to the far right side of the bar. Mass 3 is \( 4 \, \text{kg} \) and is attached to the middle of the bar. At what distance from the far left side of the bar can a string be attached to hold the bar up horizontally?

![Diagram](https://nerd-notes.com/wp-content/uploads/2024/06/5-300x192.png)

- **A.** 0.3 m
- **B.** 0.6 m
- **C.** 0.9 m
- **D.** 1.2 m

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/39430/*