# Gravity Resources

by Ron Kurtus (revised 18 February 2016)

The following material consists of website and book resources on gravity.

Books

## Basics of gravity

Force of Gravity - Universe Today Magazine

Earth's gravity - Wikipedia

How does gravity work? - How Stuff Works

Standard gravity - Average value, as compared to variation due to position on Earth - Wikipedia

International Gravity Formula - Variation of gravity with distance from equator - Geophysics dept. University of Oklahoma

I feel 'lighter' when up a mountain but am I? - National Physics Laboratory FAQ

## Vectors

Vectors - Fundamentals and Operations - Physics Classroom

Basic Vector Operations - HyperPhysics

Vectors and Direction - Physics Classroom

Independence of Perpendicular Components of Motion - PhysicsClassroom.com

## Gravity constant

Acceleration Due to Gravity - TutorVista.com

The Value of g - Physics Classroom

Acceleration Due to Gravity - Haverford College

The Acceleration of Gravity - Physics Classroom

Difference Between Pound-Force and Pound-Mass - Engineerography Blog

## Weak Equivalence Principle

Test of Weak Equivalence Principle - Precision Astronomy Group of Harvard-Smithsonian Center for Astrophysics

Feather & Hammer Drop on Moon - YouTube video

## Falling bodies

Falling Bodies - Physics Hypertextbook

Equations for a falling body - Wikipedia

Gravity Calculations - Earth - Calculator

Kinematic Equations and Free Fall - Physics Classroom

## Work and gravity

Work by gravity by Sunil Kumar Singh - Connexions

Gravity and Inertia in Running - Locomotion and Biology paper (PDF)

## Artificial gravity

Artificial gravity - Wikipedia

Simulating Gravity in Space - From Batesville, Indiana HS Physics class

Artificial Gravity and the Architecture of Orbital Habitats - Theodore W. Hall - Space Future; detailed technical paper

Artificial Gravity - Technical resources from Theodore W. Hall -

The Physics of Artificial Gravity - Popular Science magazine

Simulated Gravity with Centripetal Force - Oswego City School District Exam Prep Center, New York

## Newton's Cannon

Newton's Cannonball and the Speed of Orbiting Objects - Bucknell University Physics

Newton's cannonball - Wikipedia

## Artillery projectile

Trajectories - Hyperphysics

Projectile Motion - Wikipedia

Projectile Motion Equations And Formulas Calculator - AJ Design Software

Trajectory of a projectile - Wikipedia

Characteristics of a Projectile's Trajectory - Physics Classroom

## Books

Reinventing Gravity: A Physicist Goes Beyond Einstein by John W. Moffat; Smithsonian (2008) \$27.95

Head First Physics: A learner's companion to mechanics and practical physics by Heather Lang; O'Reilly Media (2008) \$29.99

Gravity: An Introduction to Einstein's General Relativity by J. B. Hartle; Benjamin Cummings (2003) \$84.00

### Physical Science textbooks

Conceptual Physical Science - Chapter 4 Gravity and Satellite Motion by Paul G. Hewitt, John Suchocki and Leslie A. Hewitt, Addison-Wesley Longman (2004); \$87

Physical Science: A Unified Approach - Chapter 5 Motion and Gravity by Jerry Schad, San Diego Mesa College, Brooks/Cole Publishing Co. (1995); \$215

### Physics textbooks

Physics: Algebra/Trig - Chapter 5 Centripetal Force and Gravity by Eugene Hecht, Adelphi University; Brooks/Cole Publishing (2002) \$239

Physics: Principles with Applications - Chapter 5 Circular Motion and Gravitation by Douglas C. Giancoli, Prentice Hall (2004) \$199

## Summary

If you have other good resources on these topics, let us know.

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