Consider a spherical gaseous cloud of mass density ρ(r) in free space, where r is the radial distance from its centre. The gaseous cloud is made of particles of equal mass m moving in circular orbits about the common center with the same kinetic energy K. The force acting on the particles is their mutual gravitational force. If ρ(r) is constant in time, the particle number density n(r)=ρ(r)/m is [G is universal gravitational constant]

Consider a spherical gaseous cloud of mass density ρ(r) in free space

1.	Consider a spherical gaseous cloud of mass density ρ(r) in free space, where r is the radial distance from its centre. The gaseous cloud is made of particles of equal mass m moving in circular orbits about the common center with the same kinetic energy K. The force acting on the particles is their mutual gravitational force. If ρ(r) is constant in time, the particle number density n(r)=ρ(r)/m is [G is universal gravitational constant]
Answer» Consider a spherical gaseous cloud of mass density $ρ (r)$ in free space, where $r$ is the radial distance from its centre. The gaseous cloud is made of particles of equal mass $m$ moving in circular orbits about the common center with the same kinetic energy $K$ . The force acting on the particles is their mutual gravitational force. If $ρ (r)$ is constant in time, the particle number density $n (r) = ρ (r) / m$ is [ $G$ is universal gravitational constant]

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