Find out how this works at: http://www.stevespanglerscience.com/lab/experiments/centripetal-force-penny
As a penny balances precariously on the hook of a wire hanger, you might think any sort of movement would send the penny flying. With a bit of physics know-how, you can spin the entire hanger around in a circle without losing the 1? coin. When it comes down to it, you just need to thank Sir Isaac Newton.
Want more experiments like this? Check out http://www.stevespanglerscience.com/product/naked-eggs-and-flying-potatoes
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Centripetal Force – Cool Science Experiment
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Naked Eggs and Flying Potatoes – Book Preview
Drops on a Penny – Sick Science! #152
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