Physics - Gravitation Question with Solution | TestHub

A planet of radius$\mathrm{R}=\frac{1}{10}\times$(radius of Earth) has the same mass density as Earth. Scientists dig a well of depth$\frac{\mathrm{R}}{5}$on it and lower a wire of the same length and of linear mass density${10}^{-3}\mathrm{ }\mathrm{k}\mathrm{g}{\mathrm{m}}^{-1}$into it. If the wire is not touching anywhere, the force applied at the top of the wire by a person holding it in place is (take the radius of Earth$=6\times {10}^6\mathrm{ }\mathrm{m}$and the acceleration due to gravity of Earth is$10\mathrm{ }\mathrm{m}{\mathrm{s}}^{-2}$)