---
title: "An object weighing 120 N is set on a rigid beam of negligible mass at a distance of 3 m from a pivot, as shown above. A vertical force is to be applied to the other end of the beam a distance of 4 m from the pivot to keep the beam at rest and horizontal. What is the magnitude F of the force required?"
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url: "https://nerd-notes.com/ubq/29627/"
date_modified: "2024-04-02T04:48:51+00:00"
---

# An object weighing 120 N is set on a rigid beam of negligible mass at a distance of 3 m from a pivot, as shown above. A vertical force is to be applied to the other end of the beam a distance of 4 m from the pivot to keep the beam at rest and horizontal. What is the magnitude F of the force required?

An object weighing 120 N is set on a rigid beam of negligible mass at a distance of 3 m from a pivot, as shown above. A vertical force is to be applied to the other end of the beam a distance of 4 m from the pivot to keep the beam at rest and horizontal. What is the magnitude *F* of the force required?

![Diagram](https://nerd-notes.com/wp-content/uploads/2024/03/Screenshot-2024-03-28-at-8.28.42-PM-e1712033269409-300x100.png)

- **A.** 10 N
- **B.** 30 N
- **C.** 90 N
- **D.** 120 N
- **E.** 160 N

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/29627/*