An artificial satellite is first taken to a height equal to half the radius of earth. Assume that it is at rest on the earth's surface initially and that it is at rest at this height. Let \[{{E}_{1}}\]be the energy required. It is then given the appropriate orbital speed such that it goes in a circular orbit at that height. Let E be the energy required. The ratio \[\frac{{{E}_{1}}}{{{E}_{2}}}\] is

An artificial satellite is first taken to a height equal to half the r

1.	An artificial satellite is first taken to a height equal to half the radius of earth. Assume that it is at rest on the earth's surface initially and that it is at rest at this height. Let \[{{E}_{1}}\]be the energy required. It is then given the appropriate orbital speed such that it goes in a circular orbit at that height. Let E be the energy required. The ratio \[\frac{{{E}_{1}}}{{{E}_{2}}}\] is
A.	0.167361111111111
B.	3:1
C.	0.0423611111111111
D.	0.0430555555555556
Answer» D. 0.0430555555555556