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The earth is a homogeneous sphere of mas...

The earth is a homogeneous sphere of mass M and radius R. There is another spherical planet of mass M and radius R whose density changes with distance r from the centre as `p=p_(0)r.` (a) Find the ratio of acceleration due to gravity on the surface of the earth and that on the surface of the planet. (b) Find `p_(0).`

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The correct Answer is:
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`(M)/(piR^(4))`
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