The heavenly body which revolves round the sun is called planet, e.g. the earth.
Kepler's Law's of Planetary Motion
Ist Law Every planet revolves around the sun in an elliptical orbit with the sun at one focus of the ellipse.
IInd Law The line joining the sun to the planet sweeps out equal interval of time i.e., areal velocity of radius vector joining the planet to the sun is constant;
dA/dt = constant = L/2m
where L= angular moment of the planet about sun
IIIrd Law The square of time period of revolution is directly proportional to the cube of average distance of the planet round the sun.
Kepler's Law's of Planetary Motion
Ist Law Every planet revolves around the sun in an elliptical orbit with the sun at one focus of the ellipse.
IInd Law The line joining the sun to the planet sweeps out equal interval of time i.e., areal velocity of radius vector joining the planet to the sun is constant;
dA/dt = constant = L/2m
where L= angular moment of the planet about sun
IIIrd Law The square of time period of revolution is directly proportional to the cube of average distance of the planet round the sun.
No comments:
Post a Comment