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Your Weight on Other Worlds - http://www.exploratorium.edu/ronh/weight/index.html
From the Exploratorium, an interactive calculator that will determine a person's weight on another planet. |
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The Pendulum Lab - http://monet.physik.unibas.ch/~elmer/pendulum/index.html
A virtual laboratory focused on hands-on experiments at rigid pendula. Includes explanatory text. |
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Newton's Law - http://www.projectshum.org/Gravity/
Offers a discussion in simple language. Includes jokes as well as explanation of gravitational formula. |