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What are 10 facts about gravity?

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Ten facts regarding gravity starts with the initial set of theories developed by Isaac Newton in 1665 that were supposedly inspired by his observation of a falling apple. Any human or object on the surface of Earth is also constantly being pulled down by gravity.

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There is a gravitational variance around the surface of the Earth. While an object's mass remains constant, it weighs less when measured at the equator than at the North Pole. The difference in weight becomes more varied when it is measured on different planets across the solar system due to a larger difference in gravity levels.

Ocean tides are also generated by the gravitational pulls from both the moon and sun as it interacts with the rotational movement of the Earth. Earth's gravitational pull remains relatively constant at 62 miles above its surface, with a force decrease of around 3 percent.

As of 2014, there are some roller coasters that can exert anywhere between four to six times the gravitational force of the Earth on the body of the riders due to the speed of its movements. Objects that are falling from a higher altitude also have a higher potential energy due to the distance that gravity pulls them from.

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Some of Sir Isaac Newton's achievements include defining the law of gravity and the three laws of motion, inventing the reflecting telescope, defining theories of light and color and inventing calculus. Newton was a philosopher, mathematician and physicist who played an important role in the scientific Revolution of the 17th century.

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In their school science classes, students learn about Isaac Newton's laws of motion and his work on understanding gravity. Students in history classes may learn about Newton's philosophical writings, and in advanced math classes, they could cover Newton's contribution to calculus.

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According to Biography, Isaac Newton's full name was Isaac Newton. He was born on Jan. 4, 1643, in Woolsthorpe, England, to Isaac Newton Sr. and Hannah Ayscough Newton.