Physics · 2011
NEET 2011 · Mains · Code B · Q99
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…
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 :
Official answer
(1)
$\displaystyle \sqrt{\frac{2 G M}{R}}$
More from Gravitation
- A remote - sensing satellite of earth revolves in a circular orbit at a height of 0.25 × 10^6 m above the surface of earth. If earth's radius is 6.38…2015
- A geostationary satellite is orbiting the earth at a height of 5 R above that surface of the earth, R being the radius of the earth. The time period…2012
- Two astronauts are floating in gravitational free space after having lost contact with their spaceship. The two will:2017
- A body weighs 200 N on the surface of the earth. How much will it weigh half way down to the centre of the earth?2019
- Two planets P_1 and P_2 with equal mass have radii R_1 and R_2, respectively, where R_2=R_1/2. The escape speeds of P_1 and P_2 are v_1 and v_2,…2026
- The kinetic energies of a planet in an elliptical orbit about the Sun, at positions A, B and C are K_A, K_B and K_C, respectively. A C is the major…2018
- The height at which the weight of a body becomes 1 / 16^th, its weight on the surface of earth (radius R), is:2012
- A body of mass 60 g experiences a gravitational force of 3.0 N, when placed at a particular point. The magnitude of the gravitational field intensity…2022
NEET (UG) 2011 Physics question, with the answer from NTA’s final answer key. Where our answers come from.