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    • Particle mass is non-negative

      • Because particle mass is non-negative, the gravitational interaction between massive objects can only be attractive.
      brilliant.org/wiki/gravitation/
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  2. Apr 22, 2017 · Gravitational wave carries energy and momentum, gravity is still attractive. When the gravitational wave hits something or gets absorbed by something sure it'll transfer momentum. An electromagnetic wave does the same, but it is by itself neither attractive nor repulsive.

  3. Sep 30, 2013 · It's not true to say that gravity is always attractive. The discovery of dark energy provides experimental evidence for gravitational repulsion. There is also indirect evidence for cosmic inflation, which currently holds the record for gravitational repulsion.

  4. Jul 28, 2017 · The force of gravity, $F_G$ is proportional to the product of the masses and inversely proportional to the distance, $r$, squared. Let's break this down and see what might cause $F_G$ to be positive. In this equation, $r$ cannot be negative because it's a distance between two locations.

  5. The gravitational force is relatively simple. It is always attractive, and it depends only on the masses involved and the distance between them. Expressed in modern language, Newton’s universal law of gravitation states that every object in the universe attracts every other object with a force that is directed along a line joining them. The ...

  6. Newton's law of universal gravitation states that every particle attracts every other particle in the universe with a force that is proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

  7. Sep 25, 2024 · The attractive force of a number of bodies of masses M 1 on a body of mass M is where Σ 1 means that the forces because of all the attracting bodies must be added together vectorially. This is Newton’s gravitational law essentially in its original form.

  8. Sep 25, 2024 · Gravity, in mechanics, is the universal force of attraction acting between all bodies of matter. It is by far the weakest force known in nature and thus plays no role in determining the internal properties of everyday matter.

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