put the wire in its place

A planet of radius R=1/10√óradius of earth has same mass density as earth. Scientists dig a well of depthR/5 on it and lower a wire of the same length and linear mass density10^-3kg/m 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 radius of earth=6√ó10^6m and acceleration due to gravity on earthis10m/s^2

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