I'm confused about conservative and non-conservative forces from a note I took in class. This is basically the note: Conservative (force of gravity, effort force) -is the force that does work on an object -amount of work is independant of the path taken -it takes the same amount of work to lift a mass to height 'h' regardless of the path Non-Conservative (force of friction, normal force) -the work done against the force of friction when a crate pushed on a rough surface depends on the path (Work done conservative) results in energy changes that are independant of the path, and therefore reversible. Time1 = total mechanical energy initial Time2 = total mechanical energy (Work done non-conservative) results in energy charges that are dependant on the path, and therefore may not be reversed. I don't really get the note, and I don't think my teacher explained it well enough. Can somebody please translate this for me into something easier to understand?