# A particle is droped in a deep hole which extend to the centre of the earth .calculate its velocity in the depth of one 1 KM from earth surface .asume g=10m/s and radius of earth=6400 KM

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by uttiyaroy705

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by uttiyaroy705

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If we calculate g, at depth of 1 KM, it changes from 10 to 9.9984375 only. so it can be neglected.