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An artificial satellite orbiting the earth in very thin atmosphere loses its energy gradually due to dissipation against atmospheric resistance, however small. As it comes closer and closer to earth, its speed ___________

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An artificial satellite orbiting the earth in very thin atmosphere loses its energy gradually due to dissipation against atmospheric resistance, however small. As it comes closer and closer to earth, its speed ___________

(a) Decreases progressively

(b) Remains constant

(c) Becomes non-uniform

(d) Increases progressively

I had been asked this question in homework.

Query is from Coefficient of Restitution topic in portion Gravitation of Engineering Physics I

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Right option is (d) Increases progressively

Easy explanation: As the satellite comes closer to the earth, its potential energy decreases. As the sum of kinetic energy and potential energy remains constant, the kinetic energy and the velocity of the satellite increase. But the total energy of the satellite goes on decreasing due to the loss of energy against friction.

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