# 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

Uniform circular motion is a state of motion in a circle occurring at a consistent speed. Explore acceleration, centripetal force, and centrifugal force, and practice calculating the mathematical equations that express this physics concept.

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

Despite a common misconception, speed and velocity are not the same. Learn about how these concepts differ, as well as how to use formulas to perform calculations to find both speed and velocity.

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

Angular velocity is the speed at which an object rotates, in relation to another point. Learn more about the definition of angular velocity, discover the three options for formulas for angular velocity, and have a look at some examples.

### 4. Acceleration: Definition, Formula & Examples

Acceleration is defined as the rate that a moving object changes its velocity. Explore the concepts of speed, velocity, and acceleration through real-life examples, and learn the formula necessary to calculate acceleration.

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

A force that is directed towards the center of a circle that keeps an object moving in that circle is called a centripetal force. Learn more about it's definition, issues, Newton's first law, examples and equations.

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

Newton's Law of Gravitation says that all objects attract other objects. Explore the definition and example calculations of Newton's Law of Gravitation and learn how gravity works.

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

Gravitational force is the most prevalent force in the universe, pulling together on any two objects with mass in the universe. Further define gravitational force, along with the Universal Law of Gravitation, inverse square law, and learn how to write the equation used to calculate the gravitational force between two objects with mass.

### 8. Gravitational Attraction of Extended Bodies

An extended body is a nonspherical object used in Newton's Law of Universal Gravitation. Using the gravitational attraction equation and an example, learn how to solve for the gravitational attraction of extended bodies.

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

The gravitational constant in Newton's Universal Law of Gravitation is a proven, empirical value. Learn how it's been proven by exploring Cavendish's gravity experiment and the value of G. Define G, review the law of gravitation, write the equation, and understand the significance of Cavendish's experiment.

### 10. Gravitational Field: Definition & Formula

In space, there is a force field that exists around every mass or group of masses that is known as the gravitational field. Understand the definition of a gravitational field, and the formula used to calculate gravitational force.

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

Graphs can be used to visualize the motion of objects after calculating their velocity-time or position-time. Learn the steps in this process by working through an example of measuring start and end points, distance, and time, then analyze the data from this example to magnify your understanding.

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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