A spacecraft is in orbit around a planet the radius of the, Ask an Expert

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A spacecraft is in orbit around a planet. The radius of the orbit is 2.9 times the radius of the planet (which is R = 71474 km). The gravitational field at the surface of the planet is 25 N/kg. What is the period of the spacecraft's orbit? [Hint: You don't need any more data about the planet to solve the problem.]

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