---
title: "Blocks 1, 2, and 3 are stacked vertically on a frictionless horizontal table. The masses of the blocks are \\(m_1\\), \\(m_2\\), and \\(m_3\\), respectively, with Block 1 on top and Block 3 on the bottom. A constant horizontal force \\(F\\) is applied to the middle block, Block 2. The coefficient of static friction between all block surfaces is large enough that the blocks do not slip relative to each other as they accelerate across the table. Which of the following is a correct free-body diagram for the middle block, Block 2?"
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url: "https://nerd-notes.com/ubq/110547/"
date_modified: "2026-04-07T06:37:35+00:00"
---

# Blocks 1, 2, and 3 are stacked vertically on a frictionless horizontal table. The masses of the blocks are \(m_1\), \(m_2\), and \(m_3\), respectively, with Block 1 on top and Block 3 on the bottom. A constant horizontal force \(F\) is applied to the middle block, Block 2. The coefficient of static friction between all block surfaces is large enough that the blocks do not slip relative to each other as they accelerate across the table. Which of the following is a correct free-body diagram for the middle block, Block 2?

Blocks 1, 2, and 3 are stacked vertically on a frictionless horizontal table. The masses of the blocks are \(m_1\), \(m_2\), and \(m_3\), respectively, with Block 1 on top and Block 3 on the bottom. A constant horizontal force \(F\) is applied to the middle block, Block 2. The coefficient of static friction between all block surfaces is large enough that the blocks do not slip relative to each other as they accelerate across the table. Which of the following is a correct free-body diagram for the middle block, Block 2?

![A vertical stack of three rectangular blocks labeled 1 (top), 2 (middle), and 3 (bottom) resting on a thick horizontal line representing a table. A vector arrow labeled F points horizontally to the right, originating from the center of Block 2. The surface of the table is smooth to indicate it is frictionless.](https://nerd-notes.com/wp-content/uploads/ubq-frq-generated/stem-fig-1-1775538660-xXHf7g.jpg)

- **A.** Diagram A
- **B.** Diagram B
- **C.** Diagram C
- **D.** Diagram D

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/110547/*