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2006-07-04 13:16:20 · 15 answers · asked by james g 1 in Education & Reference Homework Help

15 answers

In physics, gravitation or gravity is the tendency of objects with mass to accelerate toward each other. Gravitation is one of the four fundamental interactions in nature

Newton discovered and hypothesized about gravity....
In 1687 Newton published his work on the universal law of gravity in his Mathematical Principles of Natural Philosophy. Newton’s law of gravitation states that: every particle in the universe attracts every other particle with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between them. If the particles have masses m1 and m2 and are separated by a distance r (from their centers of gravity), the magnitude of this gravitational force is:


hows that?

2006-07-04 14:40:48 · answer #1 · answered by lilli b 3 · 0 0

Gravity has been noted for thousands of years, informally however, it was the great ones like Italy's Galileo and Newton that best explained it. For instance gravity is always working. Obvious it seems, but it explains why a 50 pound piece of metal and a piece of gum fall at the same rate. Not only that but if you horizontally shoot an object and drop an object at the SAME EXACT time, both objects will land AT PRECISLY the same time. The effect of gravity at 0 sea level based on the pull from the Earth's center is 9.8 m/s squared measured in terms of acceleration while the Force of gravity on an object can be calculated with Newton's Second Law, F=ma.
Or F=mg because gravity here is acceleration too, so say you get a 42 kg object; multiply that by 9.8 to get Newtons of force and that is the weight of an object. Because the force of gravity varies between planets, or even elevations on Earth (neglibelgy slighty), weight is different BUT MASS IS ALWAYS THE SAME. Hope that helped.

2006-07-04 20:24:58 · answer #2 · answered by Ed 1 · 0 0

No one would be the inventor of gravity since gravity has always been. Sir Isaac Newton was the person who best described what gravity is and therefore is widely credited as the discoverer of gravity although some before him speculated on what they believed gravity to be.

http://csep10.phys.utk.edu/astr161/lect/history/newtongrav.html

http://en.wikipedia.org/wiki/Gravity

http://www.howstuffworks.com/question232.htm

2006-07-04 20:21:21 · answer #3 · answered by Anonymous · 0 0

Gravity wasn't invented, it is nature and if there was no gravity, it isn't possible to invent it because men would have float in the atmosphere.
Gravity was discovered by Isaac Newton but he didn't invent it.

2006-07-04 20:45:50 · answer #4 · answered by People_lover 1 · 0 0

gravity was always around, humans finally understood its concept when sir issac newton began to study, its not 100% sure that an apple fell on newton;s head was the cause of discoverery of gravity

2006-07-04 20:57:17 · answer #5 · answered by wrxsoldier 2 · 0 0

gravity wasn't invented.. but it was discovered by Sir Isaac Newton I think.

It's a natural occurence

2006-07-04 20:19:35 · answer #6 · answered by Ms_E_Bunny 3 · 0 0

It was not invented. It was discovered. Some scientist noticed the existence of this natural phenomenon. One day he was sitting under an apple tree when an apple fell down. He was alert and smart enough to ask the question "why did the apple fall down? "Why didn't it stay in the air or go up?"

2006-07-04 20:23:45 · answer #7 · answered by Chevalier 5 · 0 0

WOW good question! It wasnt invented but discovered I think by newton when and apple fell on his head. Dont quote me but I think thats right.

2006-07-04 20:47:36 · answer #8 · answered by gigglywiggly426 2 · 0 0

Newton discovered it when an apple fell from a tree.

2006-07-04 20:20:54 · answer #9 · answered by lildevilgurl152004 7 · 0 0

I do not know who invented it, but Isaac Newton discovered it.

2006-07-04 20:21:09 · answer #10 · answered by Amy 3 · 0 0

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