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  2. Newton's law of universal gravitation - Wikipedia

    en.wikipedia.org/wiki/Newton's_law_of_universal...

    The force is proportional to the product of the two masses and inversely proportional to the square of the distance between them: [11] Diagram of two masses attracting one another = where F is the force between the masses; G is the Newtonian constant of gravitation (6.674 × 10 −11 m 3 ⋅kg −1 ⋅s −2);

  3. Gravity of Earth - Wikipedia

    en.wikipedia.org/wiki/Gravity_of_Earth

    The weight of an object on Earth's surface is the downwards force on that object, given by Newton's second law of motion, or F = m a (force = mass × acceleration). Gravitational acceleration contributes to the total gravity acceleration, but other factors, such as the rotation of Earth, also contribute, and, therefore, affect the weight of the ...

  4. Tug of war (astronomy) - Wikipedia

    en.wikipedia.org/wiki/Tug_of_war_(astronomy)

    F is the force of attraction G is the gravitational constant m 1 and m 2 are the masses of two bodies d is the distance between the two bodies. The two main attraction forces on a satellite are the attraction of the Sun and the satellite's primary (the planet the satellite orbits). Therefore, the two forces are

  5. Gravitational acceleration - Wikipedia

    en.wikipedia.org/wiki/Gravitational_acceleration

    where and are any two masses, is the gravitational constant, and is the distance between the two point-like masses. Two bodies orbiting their center of mass (red cross) Using the integral form of Gauss's Law , this formula can be extended to any pair of objects of which one is far more massive than the other — like a planet relative to any ...

  6. Gravitational focusing - Wikipedia

    en.wikipedia.org/wiki/Gravitational_focusing

    The concept of gravitational focusing describes how the gravitational attraction between two particles increases the probability that they will collide. Without gravitational force, the likelihood of a collision would depend on the cross-sectional area of the two particles.

  7. Mechanical explanations of gravitation - Wikipedia

    en.wikipedia.org/wiki/Mechanical_explanations_of...

    He further concluded that the aether moves much faster than the falling bodies. At this time, Newton developed his theory of gravitation which is based on attraction, and although Huygens agreed with the mathematical formalism, he said the model was insufficient due to the lack of a mechanical explanation of the force law.

  8. Cavendish experiment - Wikipedia

    en.wikipedia.org/wiki/Cavendish_experiment

    By measuring the angle of the rod and knowing the twisting force of the wire for a given angle, Cavendish was able to determine the force between the pairs of masses. Since the gravitational force of the Earth on the small ball could be measured directly by weighing it, the ratio of the two forces allowed the relative density of the Earth to be ...

  9. Inverse-square law - Wikipedia

    en.wikipedia.org/wiki/Inverse-square_law

    Gravitation is the attraction between objects that have mass. Newton's law states: The gravitational attraction force between two point masses is directly proportional to the product of their masses and inversely proportional to the square of their separation distance. The force is always attractive and acts along the line joining them.