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Ash asked in Science & MathematicsPhysics · 1 year ago

Can you find gravitational constant of a planet knowing only the mass and radius?

Can you find gravitational constant of a planet knowing only the mass and radius?

Update:

radius = 4.1*10^6 and mass = 3.1*10^24

4 Answers

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  • 1 year ago
    Favorite Answer

    g = [(6.67 x 10^(-11))(3.1 x 10^24)/(4.1 x 10^6)^2 ] m/s^2

    = use calculator.

    I am just ASSUMING that your mass was in kg and your radius in meters.

  • ?
    Lv 7
    1 year ago

    I keep pointing out the blindingly obvious.  HOW do you find the mass of a planet?  You cannot put it on a scale.  What you do is observe satellites about the planet and determine the gravitational acceleration.  THEN  you work using radius and gravitational acceleration to calculate mass.

  • Anonymous
    1 year ago

    Sure : g = Mp*G/rp^2 ...G beingh worth 6.67*10^-11

  • 1 year ago

    Yes, assuming the planet is a sphere.

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