Question

I need help ;-;
Gravitational potential question.

Answer 1

You need to use the expression of the gravitational potential energy.

Simply subtract the two values obtained for R and 2R.

Answer 2

I know that the expression is \[\frac{ -GM }{ R} \]
But could you please show me the precise steps, because I have tried so many times and it just wouldn't come out right ;-;
@vincent-Lyon.Fr

Answer 3

Actually, distance from Earth's centre varies from r1 = 2R to r2 = 3R.
This is probably what you have overlooked.

Answer 4

Thanks, I have already done that ^-^
Lol but for some reason I still couldn't get it right, perhaps I did a silly mistake in one of the steps, I will check again now, thank you so much!! :)