An earth satellite of mass m revolves in a circular orbit at a height h from the surface of the earth. R is the radius of the earth and g is acceleration due to gravity at the surface of the earth. The velocity of the satellite in the orbit is given by
(a) gR2/R+h (b) gR
(c) gR/R+h (d) √gR2/R+h
Answer: d
(9)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)