GravitationEasy
Question
A geostationary satellite orbit s arround the earth in a circular orbit of radius 36000 km. Then, the time period of a spy satellite orbiting a few hundred km above the earth′s surface (Re = 6400 km.) will approximately be
Options
A.1/2 h
B.1 h
C.2 h
D.4 h
Solution
Time period of a satellite very closed to earth′s surface is 84.6 min. Time period increases as the distance of the satellite from the surface of earth increases. So, timpe period of spy satllite orbiting a few 100 km above the earth′s surface should be slightly greater than 884.6 min. Therefore, the most appropriate option is (c) or 2 h.
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