---
title: "A \\(2 \\, \\text{kg}\\) ball is swung in a vertical circle. The length of the string the ball is attached to is \\(0.7 \\, \\text{m}\\). It takes \\(0.4 \\, \\text{s}\\) for the ball to travel one revolution (assume the ball travels at constant speed)."
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url: "https://nerd-notes.com/ubq/29560/"
date_modified: "2025-09-23T05:32:49+00:00"
---

# A \(2 \, \text{kg}\) ball is swung in a vertical circle. The length of the string the ball is attached to is \(0.7 \, \text{m}\). It takes \(0.4 \, \text{s}\) for the ball to travel one revolution (assume the ball travels at constant speed).

A \(2 \, \text{kg}\) ball is swung in a vertical circle. The length of the string the ball is attached to is \(0.7 \, \text{m}\). It takes \(0.4 \, \text{s}\) for the ball to travel one revolution (assume the ball travels at constant speed).

**Part a)** What is the period of the ball? *(3 points)*

**Part b)** What is the speed of the ball? *(3 points)*

**Part c)** What is the tension in the string when the ball reaches the top? *(3 points)*

**Part d)** What is the tension in the string when the ball reaches the bottom? *(3 points)*


*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/29560/*