Ch 2: Chapter 2: Mechanical Equilibrium

About This Chapter

The Mechanical Equilibrium chapter of this Prentice Hall Conceptual Physics Companion Course helps students learn the essential physics lessons of mechanical equilibrium. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Mechanical Equilibrium textbook chapter.

How It Works:

  • Identify the lessons in Prentice Hall Conceptual Physics' Mechanical Equilibrium chapter with which you need help.
  • Find the corresponding video lessons within this companion course chapter.
  • Watch fun videos that cover the mechanical equilibrium topics you need to learn or review.
  • Complete the quizzes to test your understanding.
  • If you need additional help, rewatch the videos until you've mastered the material or submit a question for one of our instructors.

Students will learn:

  • Types of force
  • How to calculate net force
  • Translational and rotational equilibrium
  • Normal force
  • Types of vectors
  • Vector addition and subtraction

Prentice Hall is a registered trademark of Pearson Education, which is not affiliated with

7 Lessons in Chapter 2: Chapter 2: Mechanical Equilibrium
Test your knowledge with a 30-question chapter practice test
Force: Definition and Types

1. Force: Definition and Types

Force is everywhere and it comes in a variety of sizes, directions, and types. In this video lesson, you'll identify force as well the different types of force that objects may experience.

Net Force: Definition and Calculations

2. Net Force: Definition and Calculations

Because forces are vectors, we can't simply add them up to get a total amount of force on an object. Instead, we calculate the net force, which is important to understand because it tells us about an object's state of motion.

Equilibrium: Translational & Rotational

3. Equilibrium: Translational & Rotational

Learn about the requirements for an object to be under translational or rotational equilibrium. Then work through a couple example problems that show how we can use translational and rotational equilibrium to find the forces acting on an object.

The Normal Force: Definition and Examples

4. The Normal Force: Definition and Examples

The normal force is also called the contact force because it only exists when objects are touching. In this lesson, we will investigate what the normal force is and how to calculate it on flat and inclined surfaces.

What Is a Vector? - Definition & Types

5. What Is a Vector? - Definition & Types

After watching this lesson, you will be able to explain what vectors are in physics, give some examples of vectors and have a basic idea of how they can be manipulated mathematically. A short quiz will follow.

Vector Addition (Geometric Approach): Explanation & Examples

6. Vector Addition (Geometric Approach): Explanation & Examples

After watching this video, you will be able to explain why we might need to add two vectors and, given magnitudes and directions, add two vectors using geometric methods. A short quiz will follow.

Vector Subtraction (Geometric): Formula & Examples

7. Vector Subtraction (Geometric): Formula & Examples

After watching this lesson, you will be able to subtract vectors geometrically and give examples of how that process might be used in physics. A short quiz will follow.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
Not Taken
Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
Not Taken

Earning College Credit

Did you know… We have over 200 college courses that prepare you to earn credit by exam that is accepted by over 1,500 colleges and universities. You can test out of the first two years of college and save thousands off your degree. Anyone can earn credit-by-exam regardless of age or education level.

To learn more, visit our Earning Credit Page

Transferring credit to the school of your choice

Not sure what college you want to attend yet? has thousands of articles about every imaginable degree, area of study and career path that can help you find the school that's right for you.