Question

Select One Option Correct from the following : A planet of radius $R = \frac{1}{10} \times (radius \ of Earth)$ has the same mass density as Earth. Scientists dig well of depth $\frac{R}{5}$ on it and lower a wire of the same length and of linear mass density $10^{-3} kg/m$ 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 the radius of [Earth = $6 \times10^{6} m$ and the acceleration due to gravity on Earth = $10 m/s^{2}$.]
(A)96 N
(B)108 N
(C)120 N
(D)150 N

Answer 1

a is correct I think

Answer 2

Select One Option Correct from the following : A planet of radius $R = \frac{1}{10} \times (radius \ of Earth)$ has the same mass density as Earth. Scientists dig well of depth $\frac{R}{5}$ on it and lower a wire of the same length and of linear mass density $10^{-3} kg/m$ 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 the radius of [Earth = $6 \times10^{6} m$ and the acceleration due to gravity on Earth = $10 m/s^{2}$.]

✔️ (A)96 N

(B)108 N

(C)120 N

(D)150 N