what is gravitation
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Explanation:
Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. ... On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth's mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects.
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Answer:
1.movement, or a tendency to move, towards a centre of gravity, as in the falling of bodies to the earth.
2.movement towards or attraction to something.
Explanation:
Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. ... On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth's mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects.
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❤️WRITTEN BY❤️
James E. Faller See All Contributors
Fellow, Joint Institute for Laboratory Astrophysics, University of Colorado, Boulder.
Last Updated: Nov 12, 2020 See Article History
Alternative Titles: g-force, gravitation
Understand the concept of gravitational force using Newton's theory of gravitation
Understand the concept of gravitational force using Newton's theory of gravitation
Explanation of gravitational force.
Encyclopædia Britannica, Inc.
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See experiments describing gravity and why zero gravity or weightlessness influence the Earth
See experiments describing gravity and why zero gravity or weightlessness influence the Earth
Overview of gravity, with a focus on zero gravity.
Contunico © ZDF Enterprises GmbH, Mainz
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Gravity, also called gravitation, in mechanics, the universal force of attraction acting between all matter. It is by far the weakest known force in nature and thus plays no role in determining the internal properties of everyday matter. On the other hand, through its long reach and universal action, it controls the trajectories of bodies in the solar system and elsewhere in the universe and the structures and evolution of stars, galaxies, and the whole cosmos. On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth’s mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects. At Earth’s surface the acceleration of gravity is about 9.8 metres (32 feet) per second per second. Thus, for every second an object is in free fall, its speed increases by about 9.8 metres per second. At the surface of the Moon the acceleration of a freely falling body is about 1.6 metres per second per second.
gravitational lens
gravitational lens
In this picture a galactic cluster, about five billion light-years away, produces a tremendous gravitational field that “bends” light around it. This lens produces multiple copies of a blue galaxy about twice as distant. Four images are visible in a circle surrounding the lens; a fifth is visible near the centre of the picture, which was taken by the Hubble Space Telescope.
Photo AURA/STScI/NASA/JPL (NASA photo # STScI-PRC96-10)
Gravity
QUICK FACTS
KEY PEOPLE
Kip S. Thorne
Isaac Newton
Galileo
John Archibald Wheeler
Simon Stevin
Pierre Bouguer
Albert Of Saxony
Felix Andries Vening Meinesz
Thomas Corwin Mendenhall
RELATED TOPICS
Mechanics
Physical science
Celestial mechanics
Earth
Physics
Universe
Gravitational wave
Black hole
Matter
Pendulum
The works of Isaac Newton and Albert Einstein dominate the development of gravitational theory. Newton’s classical theory of gravitational force held sway from his Principia, published in 1687, until Einstein’s work in the early 20th century. Newton’s theory is sufficient even today for all but the most precise applications. Einstein’s theory of general relativity predicts only minute quantitative differences from the Newtonian theory except in a few special cases. The major significance of Einstein’s theory is its radical conceptual departure from classical theory and its implications for further growth in physical thought.