Isha Lohan posted an Question
August 14, 2020 • 17:03 pm 30 points
  • IIT JAM
  • Physics (PH)

Two planets pi and p2 having masses mi and m2 revolve around the sun in elliptical orbits, with time periods ti and t2, respectively. the minimum and maximum di

Two planets Pi and P2 having masses Mi and M2 revolve around the Sun in elliptical orbits, with time periods Ti and T2, respectively. The minimum and maximum distances of planet Pi from the Sun are R and 3R, respectively, whereas for planet P2 these are 2R and 4R, respectively, where R is Q.16 a constant. Assuming Mi and M2 are much smaller than the mass of the Sun, the magnitude of is 2 M (A) 3 M2 (B)M O17 The

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    Ruby negi Best Answer

    look, this is the ur problem... third law is T^2 proportional to squre of semi major axis .and after seeing this, u will get it...

    cropped-902069897.jpg
  • comment-profile-img>
    Ruby negi best-answer

    The ratio of the squares of the periods of any two planets is equal to the ratio of the cubes of their average distances from the sun.

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    this is the third law....

  • Isha lohan 1

    What value of Radius to use in Kepler's formula? average of minor and major axis, or Semimajor axis?

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    it's a semi major axis... see attached pages..

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    Ruby negi

    option c is correct.....

    cropped-682870.jpg
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    I found T1/T2.. u can reverse it and get T2/T1...

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    in Kepler's law, it says that, it is r in formula is semi major axis. isn't it so?

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    do we need to take average R instead of semi major axis?

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    yeah we take average R...

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    for ellipse...

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