The radius of a satellite’s circular orbit around a planet is doubled

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

The radius of a satellite’s circular orbit around a planet is doubled. By what factor does the satellite’s kinetic energy change after it reaches the new orbit? (a) 14\dfrac{1}{4} (b) 12\dfrac{1}{2} (c) 22 (d) 12\dfrac{1}{\sqrt{2}}

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