---
title: "A horizontal tension force of \\( 8.0 \\) \\( \\text{N} \\) is used to pull a \\( 20 \\) \\( \\text{N} \\) wooden box toward the right along a horizontal wood surface. The coefficient of kinetic friction for wood on wood is \\( \\mu = 0.3 \\)."
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url: "https://nerd-notes.com/ubq/114215/"
date_modified: "2026-08-18T02:37:47+00:00"
---

# A horizontal tension force of \( 8.0 \) \( \text{N} \) is used to pull a \( 20 \) \( \text{N} \) wooden box toward the right along a horizontal wood surface. The coefficient of kinetic friction for wood on wood is \( \mu = 0.3 \).

A horizontal tension force of \( 8.0 \) \( \text{N} \) is used to pull a \( 20 \) \( \text{N} \) wooden box toward the right along a horizontal wood surface. The coefficient of kinetic friction for wood on wood is \( \mu = 0.3 \).

![A rectangular block sits on a long horizontal rectangular plank representing a wood surface. The block is approximately one-third the length of the plank and is centered horizontally. On the block, centered, the text reads "m = 2 kg" on the first line and "wooden box" on the second line. From the midpoint of the block’s right face, a horizontal arrow points directly to the right. Above this arrow, the label "F = 8.0 N" is written. The plank is labeled "wood" centered underneath it. The block and plank are both drawn with solid outlines, the plank being considerably longer than the block. No other forces are shown.](https://nerd-notes.com/wp-content/uploads/ubq-diagrams/nerd-notes-physical-setup-114215-1782729128-TpThr0.jpg)

**Part a)** Calculate the magnitude of the frictional force on the box. *(3 points)*

**Part b)** Identify the Newton’s Third Law force pairs. *(3 points)*

**Part c)** Determine the magnitude of the net force acting on the box. *(3 points)*

**Part d)** Calculate the magnitude of the acceleration of the box. *(3 points)*


*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/114215/*