Ch 36: Equilibrium and Momentum

About This Chapter

Review key concepts related to the phenomena of equilibrium and momentum. Engaging video lessons and written transcripts outline definitions, theorems, and examples in a clear and straightforward style.

Equilibrium and Momentum - Chapter Summary

If those physics lessons on colliding bodies, momentum, and force are too far back for your comfort, this lesson is for you. Our expert instructors have crafted these video lessons to get your resting mind in motion to engage with physics in a memorable, informative way. This comprehensive treatment of the physics of motion will provide you an overview of:

  • The definition and types of force
  • Types of equilibrium
  • Balanced and unbalanced forces, and determining individual forces acting on an object
  • Free-body diagrams
  • Torque in physics and rotational dynamics in torque
  • Momentum and impulse
  • Formula for and examples of conservation of linear momentum
  • Types of collisions and their principles

Each lesson contains an engaging video featuring video tags that let you return to individual concepts for review. A transcript of each lesson is also available for notes and practice. Using these lessons to increase your knowledge of equilibrium and momentum will help you gain confidence and ease in this subject area. Each lesson is followed by a short quiz to test your comprehension and synthesis of concepts. The chapter concludes with a multiple-choice exam to ensure your long-term memory of equilibrium and momentum is well-developed and to point out areas of weakness where further review of the lesson materials may be necessary.

10 Lessons in Chapter 36: Equilibrium and Momentum
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.

Equilibrium: Translational & Rotational

2. 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.

Forces: Balanced and Unbalanced

3. Forces: Balanced and Unbalanced

Forces are needed to start or stop an object's motion, but can also be involved when an object is at rest or already traveling at constant velocity. In this video lesson, you'll identify the difference between balanced and unbalanced forces, understanding how they affect the movement of objects.

Free-Body Diagrams

4. Free-Body Diagrams

Forces that act on an object can be drawn through special vector diagrams called free-body diagrams. In this video lesson you'll identify how to correctly represent forces in a free-body diagram through vector arrows and force labels.

Determining the Individual Forces Acting Upon an Object

5. Determining the Individual Forces Acting Upon an Object

Objects constantly have forces acting on them whether they are moving or at rest. In this video lesson, you'll understand how to identify the individual forces acting on an object by reviewing the different types of forces and the use of free-body diagrams.

Torque in Physics: Equation, Examples & Problems

6. Torque in Physics: Equation, Examples & Problems

After watching this video, you will be able to explain what torque is and use an equation to calculate torque in simple situations. A short quiz will follow.

Torque: Concept, Equation & Example

7. Torque: Concept, Equation & Example

After watching this lesson, you will be able to explain what torque is conceptually and mathematically and use both the equation and Newton's First Law for rotation to solve problems involving torque. A short quiz will follow.

Momentum and Impulse: Definition, Theorem and Examples

8. Momentum and Impulse: Definition, Theorem and Examples

To understand how a change in momentum affects an object, we look to impulse. In this lesson, you'll understand how impulse describes an object's change in momentum, as well as how changing the force or time of the impulse can have very different outcomes.

Conservation of Linear Momentum: Formula and Examples

9. Conservation of Linear Momentum: Formula and Examples

The law of conservation of momentum tells us that the amount of momentum for a system doesn't change. In this lesson, we'll explore how that can be true even when the momenta of the individual components does change.

Elastic and Inelastic Collisions: Difference and Principles

10. Elastic and Inelastic Collisions: Difference and Principles

When objects come in contact with each other, a collision occurs. In this lesson, you'll learn about the two types of collisions as well as how momentum is conserved in each.

Chapter Practice Exam
Test your knowledge of this chapter with a 30 question practice chapter exam.
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Practice Final Exam
Test your knowledge of the entire course with a 50 question practice final exam.
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