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
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a