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Gravitation
Gravitational potential energy and work done against gravity
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2026 1 question
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The amount of work done to raise a mass 'm' from the surface of the Earth to a height equal to the radius of the Earth 'R', will be:$W = \frac{mgh}{1 + \frac{h}{R}}$ With h = R: $W = \frac{mgR}{1 + \frac{R}{R}} = \frac{mgR}{2}$
