The gravitational attraction between any two objects is dependent on their combined mass and the distance between them. The gravitational attraction of a massive body is a function of the gravitational constant, and the attraction felt between two separate objects obeys the inverse-square law.
One way of describing the effect of gravity in a two-object system is that the force of gravity is in direct relation to the mass of the objects and in inverse relation to the distance between them. Using Newton's Law of Gravitation, F = G M m / r^2, it is possible to calculate the force between objects. Double the mass of an object, and its gravitational pull doubles. Double the distance between objects, and the attraction between them declines by 75 percent.
Learn MoreAs the distance between two objects decreases, the gravitational force between them increases. Conversely, as the distance between them increases, the gravitational force decreases. Gravitational force is inversely proportional to the distance between two objects squared.
Full Answer >In physics, the force of attraction between two objects is gravitational force. Isaac Newton's law of universal gravitation defines the concept of gravitational force, stating that a gravitational attraction exists between all objects.
Full Answer >Physics teaches that a contact force is a force acting between two objects, or an object and a surface that are in contact with one another. Gravity and magnetic attraction are examples of non-contact forces, as they work over a distance. Non-contact forces still apply, even when there is a vacuum between the two objects.
Full Answer >The classic example of gravitational force is that of an apple falling from a tree. Once its stem breaks, the apple accelerates toward the Earth's center of gravity at a rate of 9.8 m/s^2. The effect of gravity is observed between any two particles in the universe that have mass.
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