---
title: "Three blocks of masses m3 = 1.0, m2 = 2.0, and m1 = 4.0 kilograms are connected by massless strings, one of which passes over a frictionless pulley of negligible mass, as shown above."
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url: "https://nerd-notes.com/ubq/23479/"
date_modified: "2025-09-20T12:15:21+00:00"
---

# Three blocks of masses m3 = 1.0, m2 = 2.0, and m1 = 4.0 kilograms are connected by massless strings, one of which passes over a frictionless pulley of negligible mass, as shown above.

Three blocks of masses \(m_3 = 1.0 \, \text{kg}\), \(m_2 = 2.0 \, \text{kg}\), and \(m_1 = 4.0 \, \text{kg}\) are connected by massless strings, one of which passes over a frictionless pulley of negligible mass, as shown above.

![Diagram](https://nerd-notes.com/wp-content/uploads/2024/01/multibody-pulley-system-e1705648633620-202x300.png)

**Part a)** Find the acceleration of the \(4 \, \text{kg}\) block. *(3 points)*

**Part b)** Calculate the tension in the string supporting the \(4 \, \text{kg}\) block. *(3 points)*

**Part c)** Calculate the tension in the string connected to the \(1 \, \text{kg}\) block. *(3 points)*


*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/23479/*