Physics · 2025
JEE Main · 4 April 2025, Shift 2 · Q29
An object is kept at rest at a distance of 3R above the earth's surface where R is earth's radius. The minimum speed with which it must be projected…
An object is kept at rest at a distance of 3R above the earth's surface where R is earth's radius. The minimum speed with which it must be projected so that it does not return to earth is :
(Assume M = mass of earth, $\displaystyle \mathrm{G}=$ Universal gravitational constant)
Official answer
From NTA’s final answer key for this paper.
(4)
$\displaystyle \sqrt{\frac{\mathrm{GM}}{2 \mathrm{R}}}$
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JEE Main 2025 Physics question, with the answer from NTA’s final answer key. Where our answers come from.