Glencoe Physical Science Chapter 5: Work and Machines - Videos & Lessons

About This Chapter

The Work and Machines chapter of this Glencoe Physical Science Companion Course helps students learn the essential physical science lessons of simple machines and work. Each of these simple and fun video lessons is about five minutes long and is sequenced to align with the Work and Machines textbook chapter.

How It Works:

Identify the lessons in the Glencoe Work and Machines chapter with which you need help.
Find the corresponding video lessons within this companion course chapter.
Watch fun videos that cover the work and machines 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:

The characteristics, meaning and examples of work
How work is done by variable force
How to apply the work-energy theorem
The definition and mathematics behind power
The pulley, lever, inclined plane and other simple machines

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6 Lessons in Chapter 5: Glencoe Physical Science Chapter 5: Work and Machines

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1. Work: Definition, Characteristics, and Examples

Pushing a wall all day may feel like work, but unless you get that wall moving you're not doing any work according to the rules of physics. In this video lesson, you'll learn how work is defined as well as how to calculate the amount of work done on an object.

2. Work Done by a Variable Force

Doing work on an object is a simple concept: we apply a certain force over a certain distance. But in real life, that force is rarely constant. Therefore, we need to understand variable forces and be able to calculate them accurately.

3. Work-Energy Theorem: Definition and Application

Work and energy are closely related in physics. In this lesson, you'll learn what that relationship is as well as how we can apply it to various situations.

4. Power: Definition and Mathematics

Work involves moving an object with a force, but power tells us how quickly that work is done. In this lesson, you will learn about how power depends on both work and time as well as see examples of how to calculate power.

5. What Are Simple Machines? - Definition, Types & Examples

If you need to move or lift a heavy object, it would be wise to use a simple machine. Though these devices are far from fancy or high-tech, they are extremely helpful for getting work done.

6. Simple Machines: Lever, Inclined Plane & Pulley

Discover what a simple machine is and how it operates. Then learn about the mechanical advantages various simple machines such as levers, inclined planes and pulleys give us.

Chapter Practice Exam

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Practice Final Exam

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Summary:

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