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QAIPM-2011-Ph-1805: NEET 2011 Physics - Class 11 AIPM-2011-Ph-1805 Solution: A particle of mass m is thrown upwards from the surface of the…
A particle of mass m is thrown upwards from the surface of the earth, with a velocity u. The mass and the radius of the earth are, respectively, M and R. G is gravitational constant and g is acceleration due to gravity on the surface of the earth. The minimum value of u so that the particle does not return back to earth, is
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Step-by-Step Verified Solution
According to law of conservation of mechanical energy
1 2 m u 2 _ G M m R = 0
_ u 2 = 2 G M R
_ u = 2 G M R = 2 g R ( _ g = G M R 2 )