The work done against gravity is $mgh$, well at least that's what my textbook says. I have a question: I can apply a force say 50N, so total work done = $mgh + mah$. Where $ma$ = Force. But the truth is irrespective of the force applied, the work done against gravity is always $mgh$. Why?
For example, when I move an object with a force, the work done is more, so work depends on the Force. But in case of gravity it always depends upon the weight