Kepler´s law

Kepler´s law

1. FIRST LAW: paths of the planets are ellipses with the sun at one focus.

   • SECOND LAW: an imaginary line from the sun to a planet sweeps in equals areas in equal time.
     • THIRD LAW: ratio of periods of any planet revolving around the sun, is equal to the cube of the ratio of their avarage distances
       • (TA/TB)^2=(rA/RB)^2

2. LAW OF UNIVERSAL GRAVITATION: states that objects attract others objects with a force that is proportional to the product of their masses and to the square of the distance between

   • Fg:=Gm1m2/r^2

3. NEWTON´S LAW OF UNIVERSAL GRAVITATION: the force of attraction between 2 objects must be proportional to the objects masses (gravitational force).

4. Period of a planet orbiting the sun

   • T=2TT(ROOT SQUARE)R^2/GM1MS