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Ch 7: MTEL Physics: Laws of Gravitation

About This Chapter

Watch these lessons and refresh your knowledge of the laws of gravitation and planetary motion. The lessons and quizzes in this chapter can help you as you study for the MTEL Physics exam.

MTEL Physics: Laws of Gravitation - Chapter Summary

Use our lessons to help you prepare for questions on the laws of gravitation, weight, mass and the motion of planets when you take the MTEL Physics exam. Reviewing these topics with our videos and quizzes will enable you to tackle test questions on the following:

  • The law of universal gravitation and its importance
  • Centripetal force and its formula
  • Gravitational attraction of extended bodies
  • The formula for gravitational potential energy
  • Newton's laws pertaining to weight, mass and gravity
  • Kepler's laws of planetary motion
  • Periods and speeds of elliptical orbits
  • Eccentricity and the orbits of planets

Our lessons are designed and taught by instructors who are professionals in the field and who know what you'll need to be ready for the exam. You can count on them to provide useful information on the laws of gravitation.

8 Lessons in Chapter 7: MTEL Physics: Laws of Gravitation
The Law of Universal Gravitation: Definition, Importance & Examples

1. The Law of Universal Gravitation: Definition, Importance & Examples

Gravity is what pulls us toward Earth, but it's also what pulls Earth toward us. This is explained by the law of universal gravitation, which describes how all objects in the universe have this important force between them.

Centripetal Force: Definition, Formula & Examples

2. Centripetal Force: Definition, Formula & Examples

When an object is traveling in a circular path, centripetal force is what keeps it fixed in that path. Learn more about this force, how it is calculated and examples of its occurrence. A quiz is provided to test your learning.

Gravitational Attraction of Extended Bodies

3. Gravitational Attraction of Extended Bodies

After watching this lesson, you will be able to explain what an extended body is, understand the derivation for the force of gravity between a point charge and a long, thin bar and solve problems using the result of that derivation.

Gravitational Potential Energy: Definition, Formula & Examples

4. Gravitational Potential Energy: Definition, Formula & Examples

In this lesson, you will learn what gravitational potential is, the equation we use to calculate it, and how to use that equation. We'll look at some real-life examples so you can see how it works. A short quiz will follow.

Newton's Laws and Weight, Mass & Gravity

5. Newton's Laws and Weight, Mass & Gravity

Did you know that mass and weight are not the same? This lesson describes the difference between the two as well as the effect of gravity on weight. Examples are used to teach you how to calculate weight based on mass and acceleration of gravity.

Kepler's Three Laws of Planetary Motion

6. Kepler's Three Laws of Planetary Motion

Find out about the interesting life and major contributions of Johannes Kepler. This lesson will also teach you how to find out how long it takes a planet to revolve around the sun!

Elliptical Orbits: Periods & Speeds

7. Elliptical Orbits: Periods & Speeds

After watching this lesson, you will be able to explain what an elliptical orbit is and calculate the period and speed of an object in an elliptical orbit, if given enough information. A short quiz will follow.

Eccentricity & Orbits of Planets

8. Eccentricity & Orbits of Planets

After watching this lesson, you should be able to explain what eccentricity is and calculate the eccentricity of an orbit given relevant distance measurements. A short quiz will follow.

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