A body weighs 200 N on the surface of the earth. How much will it weigh half way down to the centre of the…

A body weighs 200 N on the surface of the earth. How much will it weigh half way down to the centre of the earth?
  1. 150 N
  2. 200 N
  3. 250 N
  4. 100 N

Solution

Weight =mg=mGMR2=W
At half way down to the centre, W'=mGMR3R23R22
=mGM2R2
=100 N .

Asked in: NEET 2019 (All India)

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