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D1 solutions: Gravitational potential

1. The moon is about 1/4 the diameter of the Earth and 1/81 of its mass. The distance between the moon and Earth is approximately 60 x radius of the earth. Sketch a graph of the variation of gravitational potential between the Earth and the moon.A rocket is fired from the Earth towards the Moon. Just after it leaves the atmosphere the rocket motors are turned off leaving it to fly to the Moon without propulsion. Ignoring...

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