Gravity

Gravity has always been there but Newton produced a theory that showed how it worked, and used the movements of the planets to show that the new theory was right.

It changed the civiised world because Newton showed the way for further scientific discoveries with theoretical work being tested against experiment and observation.

Forces are measured in newtons because it is the standard unit of force in the International System of Units (SI). One newton is defined as the amount of force required to accelerate a mass of one kilogram at a rate of one meter per second squared. This makes newtons a convenient and consistent unit for measuring forces in physics.

Mass and distance alter gravity Mass is directly proportional to the gravitational force, but distance is inversely proportional. (In other words, greater mass means greater force, and greater distance means less force)

Gravity does not lift. The force is doing the work by lifting the riders. When the riders come down from the 60 meter height, then gravity will be at work.

Gravity affects skateboards just like it does with everything else. A great basketball player can only hang in the air for so long before he can dunk the ball, but the factor of gravity depends on the speed that the ball player was traveling when he left the ground. Now with skateboarding, the more speed you have, and the amount of pop you deliver in the ollie will depend on how high you get on the speed will help with the gravity and you can stay in the air longer. but like we have already heard, what goes up, must come down.

because it contains particles in it

It may have something to do with the fact that the gravitational pulls are proportional to the masses of the earth and your teacher and that your teacher has considerably less mass than the earth!

The presence or absence of spacecraft near Mars will have

no effect whatsoever on the planet's gravitational field.

There is no effect on the specific gravity if some of the sample is removed. The amount of mass will change, but it will still have the same specific gravity. It is basically a density. The specific gravity of 1lb of cement is the same as the specific gravity of 100lbs of cement, you just have more cement.

-- dollars

-- weeks

-- kilograms

-- degrees (of temperature)

-- pages

-- watts

-- decibels

-- joules

-- lumens

Well, if you drop something made of glass or china from a height, gravity pulls it down an dit is likely to brake.

It also makes travelling up hill tricky and makes objects heavy to carry.

And lastlly, it stops humans flying ;)

1.01-1.02

Issac Newton

Gravity is the strongest force in the universe. Not because other forces are not more powerful, but because gravity reaches throughout the universe. Volcanoes really have very little effect on gravity.

mark Jackson 1984 stoney creek Ontario Canada with help from Jake j

No brakes on anything work because of gravity. Pressure and friction are what stop anything utilizing brakes. On a bike, you pull the brake lever on the handle bar and it pulls the line connected to your brakes. The two brakes pads on either side of your wheel compress, applying friction and thus stopping your bike. The harder you pull, the faster you stop.

When gravitation pull is at its strongest, we have spring tides. The spring tide reaches far up the beach at high tide, and also goes far down the beach at low tide.

After inventing a formula to describe gravity, Newton had this nice-looking formula,

but he couldn't do much with it because he didn't know any Calculus. He asked

around to find somebody who could fill him in on Calculus, and was surprised to

discover that nobody knew what he was talking about, because Calculus didn't

exist yet. So he did the only thing he could think of . . . he invented Calculus, and

then he was all set, and had everything he needed.

He took his formula for gravity, massaged it with Calculus, kneaded it with Geometry,

and came up with a bunch of really neat but weird predictions:

-- Planets travel around the sun in elliptical orbits, with the sun at one focus of

each ellipse.

-- The radius vector (line) from the sun to each planet sweeps out equal area

in equal intervals of time, so the planet has to travel faster when it's nearer

the sun, and slower when it's farther from the sun.

-- The ratio of the square of orbital period to the cube of the semi-major-axis

of the orbit is the same number for every object that orbits the sun.

These predictions didn't go over too well with the people in Newton's neighborhood,

for a variety of reasons. First of all, most of them couldn't read. The ones who

could read were also mostly left out in the cold, because they could only read

English, whereas Newton did his writing in Latin. And finally, even the people

who could read Latin, like his rector, his Bishop, his beadle, and his sexton, had

no idea what the heck he was talking about altogether.

But finally, after Newton had almost given up in despair and nailed his article

to the front door of the church, a tourist visiting his town happened to walk by

one day. He stopped to read Newton's paper, and hadn't gotten past the first

few paragraphs before he yelled out "Eureka!" and went running down the

street to Newton's house. He had to wait a while because Newton was taking

a bath with his gold crown, but he finally scored an audience with the old man

and breathlessly gave him the news:

His three predictions of planetary motion that he made up from his gravity and

his calculus were exactly the same as three popular Polish proverbs called

"Kepler's Laws". It seems that Kepler was a guy who had spent his whole life

going through the notebooks and diaries of Tycho who was a Danish hermit

who spent his life in the woods looking at the stars every night and . . . well,

it was all very complicated, but the bottom line was that Kepler came up with

the exact same three laws by going through years and years of actual factual

measurements of the real motions of the real planets, and now here came Newton

with his calculus and his geometry and his gravity and showed why the planets

must move in the way they actually do.

And that was the best proof of gravity that anybody could ask for, so Isaac said

to the visitor "Good day to you sir", and they all lived happily ever after.

Gravity is a force, which means that it has a corresponding acceleration (rate of rate of change). Because calculus is the study of rates of change, accelerations are studied in calculus.

Some people say that hobos are affected to gravity because they are so poor that they can't even afford to stay on their feet. And some other people say that this question is silly and there is no such thing as a hobo affected by gravity.

gravity, it is the force that pulls everything towards the centre of the earth.

Gravity imparts a force on an object. That force is proportional to the mass of the object. That force can cause the object to move, i.e. to accelerate and change velocity and/or distance. Other than that, gravity does not affect an object.

f = ma

where f = force in newtons, m is mass in kilograms, a is acceleration in meters per second squared. That suffices for the one body problem with a known gravity field, such as a=9.81 m s-2 on the Earth.

For the two body problem, such as Earth/Moon calculations or where a is unknown, you can use

f = G(Mm/r2)

where f = force in newtons, G is the universal gravitation constant, 6.674 x 10-11 n m2 kg-2, M and m are the masses of the two bodies in kilograms, and r is the distance between them in meters.

density or specific weight ( it is hard to explain but gravity/density of a given massA) Water is taken as standard with l.o in fresh water, and l.025 for Saline- as is marked on depth gauges on Submarines. adjust for density. Platinum and other rare earths have a very heavy specific gravity- as well suits there dense structure. on the other hand aluminum is very light.

There is gravity everywhere in the universe. So, if India is somewhere in the universe, then there is gravity there. This is a big part of the reason that people in India are able to walk around during the day, and stay on their beds during the night.