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The gravity g′ at depth d is given by g′ = g(1 − d/R) where g is acceleration due to gravity on the surface of the Earth, d is depth and R is the radius of the Earth. If the density decreased linearly with increasing radius from a density ρ 0 at the center to ρ 1 at the surface, then ρ ( r ) = ρ 0 − ( ρ 0 − ρ 1 ) r / R , and the dependence would be
Oct 17, 2024 · Weight, gravitational force of attraction on an object, caused by the presence of a massive second object, such as the Earth or Moon. Weight is a consequence of the universal law of gravitation: any two objects, because of their masses, attract each other with a force that is directly proportional
- The Editors of Encyclopaedia Britannica
A 1.0-kg mass thus has a weight of 9.8 N on Earth and only about 1.7 N on the Moon. The broadest definition of weight in this sense is that the weight of an object is the gravitational force on it from the nearest large body, such as Earth, the Moon, or the Sun. This is the most common and useful definition of weight in physics.
Nov 8, 2024 · 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. And if you were on a planet with less mass than Earth, you would weigh less than you do here. Image credit: NASA. You exert the same gravitational force on Earth that it does on you.
Oct 30, 2024 · On Earth all bodies have a weight, or downward force of gravity, proportional to their mass, which Earth’s mass exerts on them. Gravity is measured by the acceleration that it gives to freely falling objects. At Earth’s surface the acceleration of gravity is about 9.8 meters (32 feet) per second per second. Thus, for every second an object ...
Jul 21, 2022 · The gravitational force is a field force; the source of the force does not have to be in physical contact with the object to generate a pull on the object. Gravitational Force. The nature of the gravitational force has been studied by scientists for many years and is still being investigated by theoretical physicists.
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In fact, our body weight is the force of attraction of the entire Earth on us with a mass of \(6 \times 10^{24} \, kg\). Recall that the acceleration due to gravity \(g\) is about \(9.80 \, m/s^2\) on Earth. We can now determine why this is so. The weight of an object mg is the gravitational force between
