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Physics is the science of the very small and the very large. Learn about Isaac Newton, who gave us the laws of motion and optics, and Albert Einstein, who explained the relativity of all things, as well as catch up on all the latest news about Physics, on ScienceLibrary.info.

Question: Newton's Law of Universal Gravity assumes the mass of the Earth is concentrated at a point at the centre of the planet.

Do people feel heavier as they go down a deep mine?

Do people feel heavier as they go down a deep mine?

Go to the article about: Law of Gravitation

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