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35. How much energy will be necessary for making a body of 500 kg escape from the earth

How much energy will be necessary for making a body of 500 kg escape from the earth  [g=9.8 m/s2 , radius of earth 6.4×106 m]

(a)      About 9.8×106 J                (b)  About 6.4×108 J

(c)   About  3.1 ×1010 J                (d)  About 7.4××1012 J

Answer:  c

(4)

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