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

Views: 809 students