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Stephanie S
Stephanie S asked in Science & MathematicsAstronomy & Space · 1 decade ago

Help Needed In Astronomy, Please?

I have an extra credit problem in Astronomy.:

Determine the effect of the Sun's gravity on the planet Pluto that is 40 AU's from the Sun compared to the effect it has on Pluto at Earth's distance, which is only 1 AU.

Can you help me, please?

2 Answers

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  • Roger
    Lv 7
    1 decade ago
    Favorite Answer

    The Sun's gravity is weaker at a distance r by (1/r)^2 so at Pluto the Sun's gravity is 1,600 weaker than at Earth's distance.

  • Ssss
    Lv 4
    1 decade ago

    you can imagine that, the farther you get away from the sun, the less gravity it is.

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