whyis gravity an example of a scientific law?

Answer 1

because it can't be disproven

Answer 2

The scientific process does not set out to "prove" anything. The scientific process is desinged to try to disprove a scientific hypothesis.

When we make an observation of a physical phenomonum we may be moved to ask the famous question "Why is it so?"

Once this question is asked the scientific process is envoked. Once envoked the scientist will usually define a hypothesis which tries to explain the natural phenomona. The true scientist will then setup a serious of experiments to try and bring about a set of conditions which will result in the obsevered phenomonum not behaving in its normal manner.

In affect, he or she is trying to disprove that it is a natural occuring and immutable LAW.

Once a number of such experiments have been tried and the phenomona has not been able to be disproved it comes to be considered a theory.

A theory is a hypothesis that has stood the test of time. A real scientist, however does not stop there and continues to be skeptical about the phenomonum and continues to try to disprove it.

After many experiments and usually a considerable period of time if the phenomona has not been able to be disproved it comes to be considered a LAW.

Gravity has been around a long time and people have tried to defy it ever since there have been people to ask the question, "why is it so?"

So far what goes up always seems to come down. Or put more scientifically,

"There appears to be a naturally occuring phenomonum which epxresses itself in the relaionship that any two bodies anywhere in the universe attract one another and that the strength of this attraction is directly proprotional to the mass of these two bodies."

So far no one has been able to show anywhere in the known universe where this statement does not apply. So it is considered a scientific LAW. The Law of Gravity.

PS: Flying airplanes does not disprove the LAW of gravity it is an example of the power of scientific knowledge. It is an example of how knowledge of one scientific LAW can be used to overcome the manifestation of an other. In this case the Laws of avionics (flight in air) are used to create forces which directly work against the affects of gravity. But we can talk about that another time.

Answer 3

newton's law of gravitation is

F = G M1 M2 / r^2

F is the force due to gravity
M1 is the mass of the first object
M2 is the mass of the second object
r is the distance between the two objects or the distance between their centres of mass for objects that are not point masses
G is the gravitational constant

it is an empirical law because it's consistent with observations (usually). it doesn't work with strong fields or when relative velocities are large (for instance it doesn't correctly predict the orbit of the planet mercury), but it's often good enough.

the magnitude of the gravitational constant G is determined empirically, that is why it's often called a law (meaning a mathematical relationship between observable quantities such as mass and force) rather than a theory. to be fair though, relativity doesn't predict the value of G either.

Answer 4

Newtons law? bcoz its been proved scientifically thats why.

Answer 5

it's a natural law. it is evident everytime you test it. have you tried jumping without falling back to the ground? no matter how many times you try gravity, it'll always result to one thing - what ever you throw up falls back down. whatever you throw up is attracted back to the earth...

Answer 6

Natural Law....Because it works ever time.

Answer 7

because its not a theory