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Surface area of a Planet based on gravatational acceleration and mass

  1. Apr 16, 2012 #1
    Realm of the Mad God actually takes place on a spherical planet where Oryx's minions thrive. This planet has a mass of 2.73 x 10^24 kg and a gravitational acceleration of 11.2 m/s^2 at its surface. Roughly 840,000 minions live per square kilometer. Together, the players of the realm kill 1500 minions per second

    If all of the minions cease reproduction, how long would it take for Oryx's minions to go extinct (rounded to the nearest number of days)?
     
  2. jcsd
  3. Apr 16, 2012 #2

    Curious3141

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    g = GM/(r2), is a good place to start, followed by A = 4πr2
     
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