Planet X has a radius of 6.00×10^7 m and an unknown mass. When a woman of mass 65.0 kg weighs herself on a platform which is a distance of 1.50×10^7 m above the surface of this planet, the scale reads 1200 N.  a) What is the mass of Planet X? b) What is the gravitational field (g value) on the surface of planet x?

Physics for Scientists and Engineers: Foundations and Connections
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ISBN:9781133939146
Author:Katz, Debora M.
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Chapter7: Gravity
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Problem 17PQ: The mass of the Earth is approximately 5.98 1024 kg, and the mass of the Moon is approximately 7.35...
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Planet X has a radius of 6.00×10^7 m and an unknown mass. When a woman of mass 65.0 kg weighs herself on a platform which is a distance of 1.50×10^7 m above the surface of this planet, the scale reads 1200 N. 

a) What is the mass of Planet X?

b) What is the gravitational field (g value) on the surface of planet x?

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