# Ch 1: Circular Motion & Gravitation

### About This Chapter

## Circular Motion and Gravitation - Chapter Summary

What is centripetal force? Angular velocity? Gravitational field? These are the types of questions you can expect to explore in this chapter. You'll look at formulas used to calculate acceleration, speed and velocity, as well as equations used to solve problems involving uniform circular motion. Once you're finished with this chapter, you should be able to:

- Calculate speed and velocity
- Understand three formulas used to calculate angular velocity
- Define and calculate acceleration
- Explain Newton's law of gravitation
- Describe gravitational force and gravitational attraction of extended bodies
- Provide details about Cavendish's gravity experiment
- Discuss specifics about a gravitational field
- Create graphs for velocity and time of an object in motion

Each lesson can be viewed as a short video or a written transcript. Lessons are easy to access 24/7 from your smartphone, tablet, laptop or desktop, making it simple and convenient to complete your study of this chapter. Take the self-assessment quizzes to help you determine your readiness in moving from one lesson to the next.

### 1. Uniform Circular Motion: Definition & Mathematics

After watching this lesson, you will be able to explain what uniform circular motion is, in terms of both acceleration and forces. You will also be able to use equations for centripetal force and acceleration to solve problems. A short quiz will follow.

### 2. Speed and Velocity: Concepts and Formulas

Did you know that an object's speed and velocity may not be the same? This lesson describes the concepts of speed and velocity relating to objects in motion. We'll look at a specific example to help learn how to calculate both speed and velocity.

### 3. Angular Velocity: Definition, Formula & Examples

Angular velocity applies to objects that move along a circular path. We will explore the definition of angular velocity and learn three different formulas we can use to calculate this type of velocity.

### 4. What is Acceleration? - Definition and Formula

This lesson describes the difference between speed, velocity and acceleration. Examples are used to help you understand the concept of acceleration and learn to calculate acceleration with a mathematical formula.

### 5. Centripetal Force: Definition, Examples & Problems

After watching this video, you should be able to explain what centripetal force is, identify the centripetal force in a particular situation, and solve problems using the centripetal force equation. A short quiz will follow.

### 6. Newton's Law of Gravitation: Definition & Examples

This lesson explains how gravity works mathematically and teaches you how to use Newton's Law of Gravitation to solve problems. A short quiz will follow.

### 7. Gravitational Force: Definition, Equation & Examples

You probably have an idea of what gravity is, but did you know that you, right now, are actually pulling on every other object in the universe? Find out more about the gravitational force and learn an equation to calculate its pull on other objects.

### 8. 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.

### 9. Cavendish's Gravity Experiment & the Value of G

After watching this lesson, you will be able to explain what the gravitational constant is and explain how the Cavendish Experiment can be used to figure out the value of big-G. A short quiz will follow.

### 10. Gravitational Field: Definition & Formula

This lesson defines what a gravitational field is and some practical examples encountered in the real world. We also develop the equations governing the gravitational field and explain what the units of measurement mean.

### 11. Graphing the Motion of Objects: Physics Lab

After watching this lesson, you will be able to measure the motion of an object and plot position-time and velocity-time graphs based on your data. A short quiz will follow.

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### Other Chapters

Other chapters within the MHT-CET: Practice & Study Guide course

- Understanding Oscillations
- Understanding Rotational Motion
- Equilibrium & Elasticity
- Electric Force & Charge
- Current Electricity
- Using Electricity in Engineering
- Electromagnetic Induction & Magnetism
- Wave Motion
- Understanding Sound Waves
- Light Waves
- Kinetic Theory of Gasses & Radiation
- Atoms, Molecules & Nuclei in Physics
- Surface Tension & Energy
- Matter, Atomic Structure & Chemical Bonding
- D-Block Elements, Halogens, Noble Gases & Alcohols
- Basic Measurement in Chemistry
- Understanding Chemical Solutions
- Chemical Reactions & Kinetics
- Concepts of Organic Chemistry
- Stereochemistry
- Crystallization & Hydrogenation
- Applications of Chemistry in Everyday Life
- Variance, Probability & Distributions
- Geometry & 3D Shapes
- Overview of Basic Trigonometry
- Function Operations, Limits & Properties
- Exponents & Logarithms
- Linear Systems
- Vectors in Math
- Introduction to Matrices
- Calculation of Derivatives
- Applications of Derivatives in Calculus
- Integrals & Definite Integrals
- Differential Equations & Applications
- Logic & Algebra
- Plant Reproduction & Growth
- Plant Respiration & Photosynthesis
- DNA, Mendelian Genetics & Inheritance
- Introduction to Genetic Engineering
- Characteristics of Birds & Mammals
- Human Anatomy: Neurology and Endocrinology
- Human Anatomy: Cardiology, Nephrology and Immunology
- Reproduction & Contraception
- Human Disease & Diagnostic Technology
- Origins of Life
- Concepts in Pharmacology
- Concepts in Ecology
- MHT-CET Flashcards