1.

when a hole is drilled along the diameter of the earth and if a body is dropped init, it moves to and fro about the centre of the earth and is in S.H.M. with a timeperiod of

Answer»

energy at CENTER= Potential energy at surface-potential energy at center1212mv2=−GMmR−(−32GMmR)mv2=−GMmR−(−32GMmR)When MM-Mass of earthRR-Radius of earthGG- Gravitational constant1212mv2=12GMmRmv2=12GMmRv2=GMR−−−−√v2=GMR=gR−−−√=ve2–√=gR=ve2Hence d is the CORRECT answer.MARK ME AS BRAINIESTPLEASE PLEASEI THINK IT WILL HELP YOU



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