What is the Theory of Gravity? Explained by Newton and Einstein
Learn how the theory of gravity, introduced by Newton and expanded by Einstein, explains the attraction between masses and cosmic phenomena.
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The theory of gravity explains how objects attract each other. Formulated by Isaac Newton, it states that every mass exerts an attractive force on every other mass. The force's strength depends on the masses involved and the distance between them. Einstein's theory of General Relativity expanded this by describing gravity as a curvature of spacetime around massive objects. These principles help us understand planetary motions, tides, and cosmic phenomena.
FAQs & Answers
- What did Isaac Newton contribute to the theory of gravity? Isaac Newton formulated the law of universal gravitation, stating that every mass attracts every other mass with a force dependent on their masses and distance.
- How does Einstein's theory of General Relativity differ from Newton's theory of gravity? Einstein's General Relativity describes gravity as the curvature of spacetime caused by mass, while Newton's theory treats gravity as a force between masses.
- Why is the theory of gravity important for understanding planetary motions? The theory of gravity explains how planets orbit the sun due to the gravitational attraction between their masses, governing the motions and positions of celestial bodies.