Ask community Community Discussion Question: why the gravity decreases whn we move toward the core. while reverse for magnet.
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[Post New] 3 Jul 2009 22:50:07 IST
   Subject: why the gravity decreases whn we move toward the core. while reverse for magnet.
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iit_core1 (0)


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why the gravity decreases whn we move toward the core. while reverse for magnet.
    
[Post New] 4 Jul 2009 16:24:58 IST
   Subject: why the gravity decreases whn we move toward the core. while reverse for magnet.
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Shruti (68)

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g = GM/R^2

as we move towards the core, the radius of the earth decreases but along with that the mass also decreases. their cumulative effect is to decrease g.

but in case of magnetic field, there is no such relation. as we move towards the core, we get closer to the magnetic core, and hence the magnetic field increases.
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