Question

A body weight $54kg$ f on the surface of Earth.How much will it weigh on the surface of mars whose mass is $1/9$ and the radius is $1/2$ of that of earth ?

Answer 1

$g=\frac{G{M}^{\prime }}{R^{\prime 2}}$

$=\frac{GM}{q{\left(\frac{R}{2}\right)}^2}$

$g^{\prime }\le \frac{4Gm}{g}g$

$w=54\times \frac{4}{9}\times 9.8$

$=24\times 9.8$
$W=235.2M$