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demode

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**1. If you know the distance to a planet and the centripetal force on it, could you calculate the mass of the planet? Explain.**

**Fc = (MV^2) / (R)**

I don't even know where to start; in the equation above, you can only substitute the known centripetal force in, but you can't substitute the distance to a planet or the velocity in.. Is there another equation or expression for centripetal force that would satisfy the two variables in the prompt?