# Gravity and Its Theory

2158 Words Jan 26th, 2018 9 Pages
Gravity and its theory, is relatively new. Scientists still discover new correlations that they attribute to Gravity. Greek philosophers attributed the “natural motion” of the planets and stars as a part of the gods’ realm. They did not realize that gravity was involved until astronomers like Galileo and Brahe in the 1500s, discovered that the Earth and other planets revolved around the sun. Kepler later showed that they moved in an elliptical orbit, not in a circular pattern, which brought speculation as to why it occurred that way.
Gravity is a force of attraction that exists between any two objects such as the force between the Earth and the sun and between us and the Earth. It is the weakest of the forces of nature but also the most dominant force. The law of universal gravitation states that every object attracts every other object with a force that, for any two objects, is proportional to the mass of each object and inversely proportional to the distance between the objects squared. Gravity can be described by the formula: The latter which exemplifies the “inverse-square law”, which states that gravitational force varies as the inverse square of the distance between the two objects. As a result, the effect of Gravity falls rapidly as the distance increases between two objects. Weight is determined by gravity as it is the force of attraction between the Earth and you. Gravity also determines the “escape speed” for an object such as a rocket or space shuttle. The…