ST Alpha - "Where's nubby? What would the gravity be on a planet 2.6 times Earth's size and 7 times Earth's weight? -- nm" (Reading a Post)

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Where's nubby? What would the gravity be on a planet 2.6 times Earth's size and 7 times Earth's weight? -- nm

Posted by TWuG Sep 5 '13, 09:11

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Responses:

ok, an attempt at the formula - Beryllium Sep 5, 09:38 2
- Yeah, it's 7/(2.6^2) times g. -- nm - nubby Sep 5, 10:17
- I'm assuming, of course, that they mean earth's mass when the headline refers to weight -- nm - Beryllium Sep 5, 09:41
Not so bad, actually. About 0.9Gs. -- nm - Beryllium Sep 5, 09:12 6
- Wouldn't it be greater than 1G if it's bigger than Earth? -- nm - Mop (200 lbs) Sep 5, 09:13 5
  - Yes and no - I didn't do the actual math, but it's a matter of density, not "size". -- nm - Beryllium Sep 5, 09:17 4
    - All the javascript calculators I found for gravitational force are javascript, so they'd integer overflow if I put in earth's mass ... - Beryllium Sep 5, 09:21 2
      - ooh, nevermind - Beryllium Sep 5, 09:23 1
        
        Just imagine a caret in the right place for scientific notation -- nm - Beryllium Sep 5, 09:23
    - If earth had the same mass, but a wider radius, gravity would be lower. This planet is wider & heavier. - Beryllium Sep 5, 09:20
"Heavy." -- nm - Don Homer Sep 5, 09:11

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