Question
Suppose a vertical tunnel is dug along the diameter of earth assumed to be a sphere of uniform mass having density ρ. If a body of mass m is thrown in this tunnel, its acceleration at a distance y from the centre is given by
Options :
4πGρym/3
3πGρy/4
4πρy/3
4πGρy/3
Answer :
4πGρy/3
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