[" 1) "4vquad " 2) "(V)/(4)quad " 3) "2vquad " 4) "(V)/(2)],[" 9.A planet of mass "m'" is in an elliptical orbit about "],[" the sun (m<

Evaluate : (v) (2a + 3) (2a-3) (4a^(2) + 9)

A planet of mass m is in an elliptical orbit about the sun with an orbital period T . If A be the area of orbit, then its angular momentum would be

If a satellite is revolving around a planet of mass Min an elliptical orbit of semi-major axis a. Show that the orbital speed of the satellite when it is at a distance are from the planet will be given by v^(2)=GM[2/r-1/a]