Question

A planet of radius r=1/10 radius of earth scientist dig a well

Answer 1

Scientist dug the well. How deep is the well?

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Answer 2

planet of radius R=110× (radius of Earth) has the same mass density as Earth. Scientists dig a well of depth R5 on it and lower a wire of the same length and of linear mass density 10−3kgm−1 into it.