Physics · 2013
NEET 2013 · 18 May · Code Y · Q134
A particle of mass ' m ' is kept at rest at a height 3 R from the surface of earth, where ' R ' is radius of earth and ' M ' is mass of earth. The…
A particle of mass '$\displaystyle m$' is kept at rest at a height $\displaystyle 3 R$ from the surface of earth, where '$\displaystyle R$' is radius of earth and '$\displaystyle M$' is mass of earth. The minimum speed with which it should be projected, so that it does not return back, is :
(g is acceleration due to gravity on the surface of earth)
Official answer
(3)
$\displaystyle \left(\frac{G M}{2 R}\right)^{\frac{1}{2}}$
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NEET (UG) 2013 Physics question, with the answer from NTA’s final answer key. Where our answers come from.