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Question

A satellite gets unstable in its orbit, starts to fall towards the earth and also starts burning. If the satellite had a potential energy of 1000 MJ initially and by the time it reaches the surface the earth, it attains a kinetic energy of 500 MJ. Then, how much energy is spent as heat generated on the satellite?


A

1000J

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B

5000J

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C

500J

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D

None of These

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Solution

The correct option is C

500J


potential energy is converted to kinetic energy and heat.
Using the law of conservation of energy,
PE = KE + Heat Energy

1000 = 500 + heat energy

heat energy = 500 MJ


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