gdgh=RE3GM(RE−r)(RE+r)2GM=(RE+r)2(RE−r)RE3
ghgd=RE3(RE+r)2(RE−r)=RE3RE3−REr2+rRE2−r3=1−RE2r2+REr−(REr)3
JEE Main 2021 — Physics Mechanics
If RE be the radius of Earth, then the ratio between the acceleration due to gravity at a depth r below and a height r above the earth surface is:
(Given : r<RE)
Held on 31 Aug 2021 · Verified 6 Jul 2026.
1+REr−RE2r2−RE3r3
1+REr+RE2r2+RE3r3
1−REr−RE2r2−RE3r3
1+REr−RE2r2+RE3r3
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