Asked by joy
                A black hole is an object with mass, but no spatial extent. It truly is a particle. A black hole may form from a dead star. Such a black hole has a mass several times the mass of the Sun. Imagine a black hole whose mass is eighty-two times the mass of the Sun.
(a) Would you expect the period of an object orbiting the black hole with a semimajor axis of 1 AU to have a period greater than, less than, or equal to 1 yr?
greater than
less than
equal to
(b) Use the equation
T2 =
4π2
GM
a3
to calculate this period.
 
yr
            
        (a) Would you expect the period of an object orbiting the black hole with a semimajor axis of 1 AU to have a period greater than, less than, or equal to 1 yr?
greater than
less than
equal to
(b) Use the equation
T2 =
4π2
GM
a3
to calculate this period.
yr
Answers
                    Answered by
            bobpursley
            
    wouldn't the centripetal force to keep in orbit be greater due to the increased mass?  If that force is greater, it must be traveling faster (remember v^2/r ?)
    
                    Answered by
            Dr. Neutron
            
    For a, it is less than and for b,itis The square root of 1^3/82=.110yr 
    
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