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Home > Courses > 1P21_Razavi
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Suppose that the Sun runs out of nuclear fuel and suddenly collapses
to form a so-called white dwarf star, with a diameter equal to that of the
Earth. Assuming no mass loss, what would be the Sun's new rotation period,
which currently is about 25 days? Assume that the Sun and the white dwarf
are uniform solid spheres.
(Hint: Assume that there is no net torque acting on the Sun and this remains true throughout the Sun's
evolution into a white dwarf)
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