MHT CET Physics question
A particle of mass 'm' is kept at rest at a height 3R from the surface of earth, where 'R' is radius of earth and 'M' is the mass of earth. The minimum speed with which it should be projected, so that it does not return back is (g = acceleration due to gravity on the earth's surface) [MHT-CET 2021]
Answer: (A)
Solution
The distance from the centre is 4R; escape needs , so ;
See the full step-by-step solution
Create a free account to read the complete working, and practise questions like this in a timed test.
Create a free account