About This Unit

Linear dynamics is the study of forces and how they relate to straight-line motion. This unit covers force types, force diagrams, mass, weight, center of mass, rotated coordinate systems, Newton's laws of motion, friction, and spring forces.

About This Lesson

Welcome to Force Types, Force Diagrams, the first lesson in Unit 3: Linear Dynamics.

This lesson begins the study of forces and how to picture them.

How to Use This Lesson

1. Watch the teaching video
2. Complete the worksheet
3. Check your answers
4. Use the worked video solutions for any problems you want to review step by step

Teaching Video

In this video, I break down the five force types you will need to understand for Physics 1 courses. I discuss the cause of each force and their directional rules. I also talk through the steps necessary to complete a force diagram and work through multiple examples.

Practice Materials

Use the resources below to practice the concepts from this lesson. Try to complete the worksheet on your own before checking the answer key.

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• Download Worksheet (3.01 Force Types, Diagrams)
• Download Answer Key (3.01 Force Types, Diagrams)

Worked Solutions

The videos below walk through each worksheet problem step by step.

Problem 1

Problem 2

Problem 3

Problem 4

Problem 5

Problem 6

Problem 7

Problem 8

Next Step
When you’re ready, continue to 3.02 Angled Forces, Rotated.