On Collapse of Uniform Density Sphere with Pressure (Report‪)‬

1. Introduction Radial adiabatic motion of perfect fluid spheres of uniform density, E = E(t), but non-uniform pressure were discussed by Bonnor and Faulkes [1], Thompson and Whitrow [2,3] and Bondi [4] under various assumed relationships between central pressure and density. These authors discussed the problem of collapse and bounce under two assumptions: first, that the motion is isotropic or shear-free; and second, that the density is uniform. But Mishra and Shrivastava [5] showed that the condition of uniform density and regularity at the centre necessarily lead to the isotropic motion.