8. A spherically symmetric gravitational system of particles has a mass density SPoforrR where Po is a constant. A test mass can undergo circular motion under the influence of the gravitational field of particles. Its speed V as a function of distance r(0

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8. A spherically symmetric gravitational system of
particles has a mass density
Poforr<R
where Po is a constant. A test mass
Oforr>R
can undergo circular motion under the influence
of the gravitational field of particles. Its speed V
as a function of distance r(0<r<oo) from the
centre of the system is represented by
[2008]
a)
b)
R
R
c)
d)
Ř
R
Transcribed Image Text:8. A spherically symmetric gravitational system of particles has a mass density Poforr<R where Po is a constant. A test mass Oforr>R can undergo circular motion under the influence of the gravitational field of particles. Its speed V as a function of distance r(0<r<oo) from the centre of the system is represented by [2008] a) b) R R c) d) Ř R
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