---
title: "A crate of mass \\(M\\) is pulled across a rough horizontal floor at a constant velocity by a rope that exerts a tension force \\(T\\) at an angle \\(\\theta\\) above the horizontal. Which of the following free-body diagrams best represents the forces acting on the crate?"
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url: "https://nerd-notes.com/ubq/113117/"
date_modified: "2026-05-05T04:25:29+00:00"
---

# A crate of mass \(M\) is pulled across a rough horizontal floor at a constant velocity by a rope that exerts a tension force \(T\) at an angle \(\theta\) above the horizontal. Which of the following free-body diagrams best represents the forces acting on the crate?

A crate of mass \(M\) is pulled across a rough horizontal floor at a constant velocity by a rope that exerts a tension force \(T\) at an angle \(\theta\) above the horizontal. Which of the following free-body diagrams best represents the forces acting on the crate?

- **A.** The diagram includes a downward arrow for gravity \(Mg\), an upward arrow for the normal force \(F_N\) that is shorter than the gravity arrow, an arrow for tension \(T\) pointing up and to the right, and a leftward arrow for friction \(f\).
- **B.** The diagram includes a downward arrow for gravity \(Mg\), an upward arrow for the normal force \(F_N\) that is equal in length to the gravity arrow, an arrow for tension \(T\) pointing up and to the right, and a leftward arrow for friction \(f\).
- **C.** The diagram includes a downward arrow for gravity \(Mg\), an upward arrow for the normal force \(F_N\), an arrow for tension \(T\) pointing down and to the right, and a leftward arrow for friction \(f\).
- **D.** The diagram includes a downward arrow for gravity \(Mg\), an upward arrow for the normal force \(F_N\), an arrow for tension \(T\) pointing up and to the right, but no arrow for the friction force.

*The answer key and step-by-step explanation are available to logged-in users at https://nerd-notes.com/ubq/113117/*