The weight of a certain body on the surface of earth is $90 \mathrm{~kg} . \mathrm{wt}$. If the mass

Question

The weight of a certain body on the surface of earth is $90 \mathrm{~kg} . \mathrm{wt}$. If the mass of the Mars is $1 / 9$ times that of the earth and its radius be half that of the earth, what will be the weight of the body on the Mars\

Professor PC Thomas Classes · Answer

$g_{p}=\frac{m}{n^{2}} \quad g_{e}=\frac{\left(\frac{1}{9}ight)}{\left(\frac{1}{2}^{2}ight)} \quad g_{e}=\frac{4}{9} g_{e}$ \Weight on Mars $=m g p$ \ $ \begin{aligned} & =90 	imes \frac{4}{9} \mathrm{~g}_{\mathrm{e}} \ & =40 \mathrm{~g}_{\mathrm{e}} \mathrm{~N} \ & =40 \mathrm{kgwt} \end{aligned} $