Intensity of Gravitational Field :: Discussion


6.A body weighed 250N on the surface. Assuming the earth to be a sphere of uniform mass density, how much would it weigh half way down to the centre of earth?
A.240N
B.210N
C.195N
D.125N
Answer:  Option  D
Explanation:

At depth,
d=R/2
gd=g(1-d/R)=g(1-(R/2)/R)=g/2
New weight = mg/2=250/2=125N.

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Published by:Michael Daani

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