Because gravitational force is a function of both the masses of the objects, and the distance between the objects that are attracting one another.
If you move to a different spot on earth, Your mass and the earth's mass doesn't change, but the distance between the center of your body and the center of the Earth could change.
So the closer you are to the center of the earth, the greater the gravity. The further away you move from the center of the earth, the weaker the gravity.
So if you are in Death Valley, you would weight slightly more than you would if you were at the top of Mount Whitney.
The force of gravity varies slightly at different places on Earth due to variations in the planet's shape, density, and rotation. Factors such as mountains, ocean trenches, and differences in the distribution of mass can cause gravitational anomalies. These variations are relatively small and generally go unnoticed in our daily lives.
Two things determine gravitational pull.
First, mass. The heavier an object is, the stronger the gravity. At a given distance, a planet (or any other object) with twice the mass has twice the gravity.
Second, distance from the center (of mass) of that object.
Gravity decreases with the square of the distance. If you are 2 times further from the center of the object, gravity pull is 1 / (2x2), or 1/4 as strong.
To illustrate this concept further, if you were 10 times further from the center of the object, gravity would be 1 / (10x10), or 1/100th as strong.
Distance to CENTER is very important. If you climb up a mountain, you WILL be lighter than you were at the bottom (provided you drank exactly as much water as you sweat and you didn't eat), but the difference is so small that you'd have to have a VERY accurate scale to tell the difference.
Back to planets. Earth is dense, and relatively small. High gravity for its size. The moon is very small, and less dense. It has 1/81st of Earth's mass, but since you are 3.64 times closer to the center, that offsets the difference in gravity, so the moon's gravity is about (1/81)/((1/3.64)x(1/3.64)), or (1/81)/(1/13.25), or about 1/6th of Earth's gravity.
Saturn is gigantic. It weighs as much as 75 Earths, but Saturn has about 9x the Earth's diameter (which puts you about 9x further from the center). The density of Saturn is so low that gravity at the top of the clouds is even less than it is on Earth. But, there's nothing solid to stand on up there - just like being on top of the clouds on Earth.
And finally, Jupiter is monstrous. It weighs as much as 318 Earths, and is 11x as far across. Gravity at the top of Jupiter's clouds = 318/(11x11) = 2.63 Times as strong as Earth's.
The farther you are from the center of a mass the less affect it has on you. The Earth, for example, is far away from stars of greater mass than the sun, but their gravitational force on the Earth is insignificant. It works the same as you get further away from the center of the Earth. The Earth is slightly bugled out at the equator because of its centripetal force, making it further from the center of the Earth. This makes you a pound lighter at the equator than at the North Pole, which would be closer to the center of the Earth.
The g(small g value) value on the earth is inversioly proportional to square of the radius .the radius of the earth varies from place to place hence it varies
The mass of an object itself does not change on the moon. However, an object's weight is less than it would be on Earth because the moon's gravity is weaker than Earth's gravity.
No, the mass of an object is independent of where it is. The mass does not change. However, the weight (that is the product of mass and gravity acceleration) changes by change of the gravity. For example, the gravity on the moon is 1/6th that on earth. so, the object weight on the moon is 1/6th the same object weight on earth.
No. On Earth the force of gravity or acceleration is always about 9.8m/sec^2 Earth's gravity does not change just because the cart gets heavier lighter.
Earth has more gravity. The elephant's mass will hardly change if you take it to the Moon, and:weight = mass x gravity
Your weight on the moon is one-sixth (1/6) what it is on earth.
Yes, theoretically. The force due to gravity changes slightly depending on where you are, albeit so slightly as to be imperceptible.
The only way to do that is to physically take it away from the Earth. As long as the object remains on the Earth, you can apply additional forces to it, to combine in various ways with the force of gravity and make the object move as you want it to, but there's nothing you can do to change the force of gravity on it.
No. Force of gravity is not time dependent. It is proportional to the product of masses of the earth and the matter in question and inversely proportional to the square of the distance between the center of the earth and the center of the matter.
no =)
you can go places better because it don't have much gravity
As long as the Earth's mass doesn't change, neither does its gravity, regardless of what day it is.
Nothing, the force of gravity is not affected by Earth's rotation. However measurement of WEIGHT would change.
Change of gravity pull
Since Jupiter is further than the moon, there is not as much gravity as the Earth and moon.
Yes, the mass doesn't change. The weight may change, depending on the local gravity. The apparent weight will change even more, because of the (ficticious) "centrifugal force".
Differences in density and gravity.
Because gravity is the force of attraction between two objects, and the strength of the force depends on the distance between them. If the Earth is one of the objects and the other one leaves the Earth, then the force of gravity it feels is certainly going to change.