Physics

Problem

A spherical balloon of volume

0.005\,\text{m}^{3}

is tied to the bottom of a tank containing oil of density

800\,\text{kg/m}^{3}

. If the tension in the string is

25\,\text{N}

, calculate the density of the material of the balloon. (Take

g = 10\,\text{m/s}^{2}