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Gravity Resources

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As very little, we were told that earth has gravity, and we are not flying away from the earth because the gravitational force holds us from flying away. The gravitational force is defined as Fg= GMm/(r^2). You might have learned this formula in a non-calculus based general physics class. Also, you might have learned the other formula relating to gravitational potential energy. The gravitational... read more

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Gravitation Written by tutor Maria W. Gravitation is a universal phenomenon that describes the tendency of physical bodies to attract, or move toward each other. The gravitational force is responsible for keeping the Moon in orbit about the Earth, holding together the billions of stars in our galaxy, and most importantly, keeping you attracted to the Earth, safe from floating off into space... read more