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- Objects with more mass have more gravity. Gravity also gets weaker with distance. So, the closer objects are to each other, the stronger their gravitational pull is. Earth's gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body. That's what gives you weight.
spaceplace.nasa.gov/what-is-gravity/en/
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Nov 2, 2016 · If I have two equal mass of objects, and one is less dense but spread over a larger volume, how does their gravity differ from two masses of equal mass and density? (assuming the given volumes do not intersect.)
The weight of an object is the force of gravity on the object and may be defined as the mass times the acceleration of gravity, w = mg. Since the weight is a force, its SI unit is the newton. Density is mass/volume. Index
A gravitational field is where a mass experiences a force. All matter has a gravitational field that attracts other objects. The more mass an object has, the greater its...
- Gravity on Earth
- Gravity in Space
- How Does Gravity Work?
Cars, trucks, airplanes, mosquitos, your body and everythingaround you—it's all stuck to Earth by the force of gravity. Ifwe've just said gravity is a weak force, how is that possible? Howcan such a weak force pull something like a huge Jumbo jet downtoward the ground? Gravity might be weak, but Earth has a lot of itbecause our planet is so big and...
Photo: Astronauts train for space in a "vomit comet": It simulates weightlessness by making deep dives toward Earth.Photo courtesy of NASA on The Commons. Scientists used to think Earth sat at the center of the Universe:theories of astronomy were geocentric, which meansEarth-centered. Until the 16th century, most people thought the Sunrotated aroun...
Early scientific ideas about gravity were based on watching howthings naturally fell toward the ground. Aristotle, the ancient Greekphilosopher, who lived about 2350 years ago, famously believed thatheavier things fall faster than light ones, so if you drop a stoneand a feather at the same time, the stone wins the race and hits theground first. Mea...
Gravity is most accurately described by the general theory of relativity, proposed by Albert Einstein in 1915, which describes gravity not as a force, but as the curvature of spacetime, caused by the uneven distribution of mass, and causing masses to move along geodesic lines.
Gravity is the field around the Earth that can be measured by satellites. Changes in the gravity field are related to change or transportation of mass, which can provide information on ocean circulation, glacial melt, droughts or geodesy.
Learn about and revise gravity, weight, free body diagrams, resolving forces and work with GCSE Bitesize Combined Science.
