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March 26, 2017

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A 2.5 kg mass weighs 23.75 N on the surface
of a planet similar to Earth. The radius of this planet is roughly 7.7 × 10^6 m.
Calculate the mass of of this planet. The value of the universal gravitational constant is 6.67259 × 10^−11N · m2/kg2.
Answer in units of kg

  • physics - ,

    g' om the planet is Wt/mass = 9.5 m/s^2

    On earth, it is 9.8 m/s^2

    M'/R'^2 = (95/98) Me/Re^2

    Knowing the earth radius, Re and mass Me, you can calculate M'

    You could also get M' from

    F = G M' m/R'^2

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