The mean radius of the earth is R, its angular speed on its own axis is ω and the acceleration due to gravity at earth’s surface is g. The cube of the radius of the orbit of a geostationary satellite will be
(a) R2g/ ω (b) R2 ω2/g
(c) Rg/ ω2 (d) R2g/ ω2
Answer: d
(5)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)