Question:
The mass of a spaceship is $1000 \mathrm{~kg}$. It is to be launched from the earth's surface out into free space. The value of ' $g$ ' and ' $\mathrm{R}$ ' (radius of earth) are $10 \mathrm{~m} / \mathrm{s}^{2}$ and $6400 \mathrm{~km}$ respectively. The required energy for this work will be :-
Correct Option: 1
Solution:
