*34. A neutron star
has a mass of 2.0 x 1030 kg (about the mass of our
sun) and a radius of 5.0 x 103 m (about the height of
a good-sized mountain). Suppose an object falls from rest near the surface of
such a star. How fast would this object be moving after it had fallen a
distance of 0.010 m? (Assume that the gravitational force is constant over
the distance of the fall and that the star is not rotating.) |
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Object would accelerate at the
g for the neutron star. An object
falling from rest would have a speed found from |
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So use g from |
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