Questions
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?
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a
100 N
b
150 N
c
200 N
d
250 N
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Correct option is A
Acceleration due to gravity at a depth d,gd=g1-dR For d=R/2⇒gd=g1-R/2R=g2 Required weight W'=mgd=mg2=W2=2002=100 N
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