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by Anonymous on December 9th, 2009

Anonymous

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Help answer this question below.

How is the mass of the Sun determined?

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  • by Aksafari on December 9th, 2009

    Aksafari

    Good question. Pretty amazing, huh? And to think that we've had a pretty good idea about it for something like 300 years.
    Horray for math!

    Comments

    • Yes, like Kepler's method...
      he said (2Pi)^2 but 4Pi^2 is equal

      k= 4Pi^2/(P^2/a^3)

      P^2/a^3 is constant and equals 2.98E-19

      thus k = 39.48/2.98E-19

      k = 1.32714036E20 equals GM or Force of the Sun

      now M =k/G...1.32714036E20 /6.6724E-11 = 1.989E30 kg's!!! Before G we solved things this was...

      P= 2Pi*SQRT(a^3/4Pi^2/(P^2/a^3))

      Now P= 2Pi*SQRT(a^3/GM) as k = GM

      archimedes

      by archimedes on December 9th, 2009

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