The time period of a satellite of earth is $5$ hours. If the separation between the earth and the satellite is increased to four times the previous value, the new time period will become ......... $hours$
$20$
$10$
$80$
$40$
Let kinetic energy of a satellite is $x$, then its time of revolution $T$ is proportional to ..............
A satellite which is geostationary in a particular orbit is taken to another orbit. Its distance from the centre of earth in new orbit is $2$ times that of the earlier orbit. The time period in the second orbit is
A satellite is in a circular equatorial orbit of radius $7000\,km$ around the Earth. If it is transferred to a circular orbit of double the radius then its angular momentum will be
Aplanet of mass $m$ is in an elliptical orbit about the sun $(m < < M_{sun})$ with an orbital period $T.$ If $A$ be the area of orbit, then its angular momentum would be :
A spherical asteroid having the same density as that of earth is floating in free space. A small pebble is revolving around the asteroid under the influence of gravity near the surface of the asteroid. What is the approximate time period of the pebble?