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Gravitational binding energy question

  • 05-04-2007 8:39pm
    #1
    Precision
    Closed Accounts Posts: 14 ✭


    Maths Physics Question
    (taken from Modern Pypsics by Rohlf, Ch 1, Qs 46)


    Show that the gravitational binding energy (Eb) of a uniform sphere of mass M and radius R (and where G is the gravitational constant) is

    Eb = (3*G*(M^2))/(5*R)

    (Hint: Start with an infinitesimal mass dM and calculate the energy released as mass is brought in from infinity.)


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