You need energy to produce a force that compensates gravity. So if you apply that force for a huge amount of time, will gravity ever be depleted?
In: 39
No, force is not equal energy, if there’re forces but nothing happens then there’s no energy. A book on a table has forces acting on it, but it doesn’t move so no work has been done. To make gravity do work(work is basically energy btw.) things have to fall(otherwise it would just be a book sitting on a table), like a book falling from the table or water flowing from higher elevation(pass it through a generator, and you get a hydroelectric dam) but for book to fall off the table, someone must put it up there which require energy, as for water, it’s the sun that do the work by driving water cycle…basically you can’t get free energy from gravity, gravity is not a generator, it’s a BATTERY, it doesn’t create energy, it stores energy in form of height, the higher you put a thing the more energy that thing has, which you can extract by making it fall, if the thing doesn’t fall then there’s no work and you can’t get work done without something doing the work.
Latest Answers