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Manipal MET2011PhysicsGravitation

How much energy will necessary for making a body of 500 kg escape from the earth? (g=9.8 ~m / s ^2 . , radius of the earth =6.4 10^6 ~m )

Options

  1. Aabout 9.8 10^6 ~J
  2. Babout 6.4 10^8 ~J
  3. Cabout 3.1 10¹⁰ ~J
  4. Dabout 27.4 10¹² ~J

Correct answer

C. about 3.1 10¹⁰ ~J

Step-by-step solution

Given m=500 ~kg , g=9.8 ~m / s ^2 AND R_e=6.4 10^6 ~m Energy required to scape aligned E & =m g R_e & =500 9.8 6.4 10^6 & =3.1 10¹⁰ ~J aligned

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