---
title: "A uniform rod of length \\( L \\) is pivoted at one end and released from rest in the horizontal position. The rod swings freely downward. Which of the following best describes the angular acceleration of the rod as it swings from the horizontal position to the vertical position?"
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url: "https://nerd-notes.com/ubq/112950/"
date_modified: "2026-05-03T10:16:47+00:00"
---

# A uniform rod of length \( L \) is pivoted at one end and released from rest in the horizontal position. The rod swings freely downward. Which of the following best describes the angular acceleration of the rod as it swings from the horizontal position to the vertical position?

A uniform rod of length \( L \) is pivoted at one end \(45^{\circ}\) below the horizontal and released from rest. The rod swings freely downward. Which of the following best describes the angular acceleration of the rod as it swings from the initial position to the vertical position?

![A side view diagram showing a uniform rod of length L pivoted at its upper left end. The rod is positioned at an angle of 45 degrees below the horizontal. A dashed horizontal reference line is drawn through the pivot point. An arc-shaped arrow indicates the clockwise motion of the rod towards the vertical. The pivot point is represented by a small filled circle.](https://nerd-notes.com/wp-content/uploads/ubq-diagrams/nerd-notes-physical-setup-112950-1777803287-8BS0yC.jpg)

- **A.** It increases to a max value
- **B.** It decreases to a minimum value
- **C.** It increases to a max value, then decreases to a minimum value
- **D.** It remains constant throughout the swing

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/112950/*