![]() ![]() You can contribute through PayPal, Patreon, Venmo and Crypto. It’s hard to rely 100% on ads, and your contributions will help us continue providing the best cultural and educational materials to learners everywhere. Every object with mass exerts a gravitational force on every other object. If you would like to support the mission of Open Culture, consider making a donation to our site. We humans on earth think of gravity as an apple hitting Isaac Newton on the. Twisting the wire requires a torque that is a function of the wire width. To find average velocity I did the following: Vave d/ t 9.2cm/0.1s 92cm/s Therefore at 0.2s, the average velocity was 92cm/s. A torsion balance consists of a bar suspended at its middle by a thin wire or fiber. Vave d/ t One example calculation would be at 0.2 seconds, when displacement is 9.2cm. ![]() My favorite part comes at the 2:15 mark, where Burns demonstrates the answer to a question you’ve maybe pondered before: why do all planets happen to orbit the sun moving in a clockwise (rather than counter-clockwise) fashion? Now you can find out why. Average velocity was found by dividing change in time by displacement. Using these readily-available objects, you can demonstrate how matter warps space-time, how objects gravitate towards one another, and why objects orbit in the way they do. Go to the Gravity Force Lab PhET simulator. Get $20 of spandex, some marbles, a couple of weights, and you’re all good to go. Gravity Lab gravity lab name: adam background law of universal gravitation. Just a few miles down the highway from Open Culture’s gleaming headquarters you will find Los Gatos High School, where Dan Burns, an AP Physics Teacher, has figured out a simple but clever way to visualize gravity, as it was explained by Einstein’s 1915 General Theory of Relativity.
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