Gravitational force

Every particle of matter in universe attracts every other particle with is proportional to the product of their inert masses m₁ and m₂ and inversely proportional to the square of a distance r between them

, (4.14)

where is a constant of gravity, =6,670·10^-11H·m²/кг².

Sometimes we come across a term gravitational mass relating to properties the bodies to act on other bodies in space. It is quite obvious, that all bodies are connected with space (which possesses definite physical properties) and this connection manifests itself as a gravitational field surrounding each body. The action of the gravitational field of a given body on other is expressed in the appearance of forces of gravity, whose numerical values vary for different bodies.

If we choose a standard body as a unit mass, we can compute the gravitational mass of any other body by using this equation and measuring the distance and the force of gravity between them. In result we have

. (4.15)

Date: 2015-01-12; view: 910