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16 June, 02:28

An astronaut has weight W on Earth. The astronaut travels to a planet that has a mass 8 times greater than Earth's mass, and its radius is 2 times greater than Earth's radius. What is the astronaut's weight on the planet?

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  1. 16 June, 02:36
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    The mass alone would multiply his weight by 8 ... the radius alone would multiply his weight by 1/4 ... Together, his weight becomes (8 / 4) W = 2W.
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