Show that the density of nucleus over a wide range of nuclei is constant independent of mass number.

$R={{R}*{0}}{{A}^{\frac{1}{3}}}$
Density $\rho =\frac{mA}{\frac{4}{3}\pi {{({{R}*{0}}{{A}^{\frac{1}{3}}})}^{3}}}$

$=\frac { m }{ \frac { 4 }{ 3 } \pi { { R }_{ 0 }^{ 3 } } }$

Hence p is independent of A.

(Here m is the mass ol Lite nucleus.)