If g is the acceleration due to gravity on the surface of the earth, the gain in potential energy of an object of mass m raised from the earth's surface to a height equal to the radius R of the earth is
∴ Change in potential energy, ΔP.E=−mgR2−(−mgR)=mgR2
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Q1
The change in Gravitational potential energy when a body of mass m is raised to a height nR from the Earth’s surface is (R= radius of the earth, g= acceleration due to gravity on the surface of Earth)