匿名
匿名 發問於 科學及數學物理學 · 2 月前

一條物理問題(邊個好心人答岩,我會比晒5粒星), thx!!?

Thor's dad,Odin,uses his magic/science/technology to crush a planet down to 1/3 of its original diameter, but it still has the same mass. How does the gravitational acceleration of the new planet compare to the original acceleration at the surface of the planet? (show work, no points for correct answer only)

1 個解答

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  • Jenkin
    Lv 7
    2 月前
    最愛解答

    Ref. gravity formula: 

    If Mass same, New r is 1/3R.

    new g will be 1/(1/3R)^2 more or about x9 times more than original planet.

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