I was just confused now. Is there work being done if I lift a bucket of water straight up? I know there is something about "work being done BY the bucket" and "work being done ON the bucket". Since I'm not moving horizontally does it mean that no work is done on the bucket? But I'm still doing work because I would get warm etc ?? I also read somewhere that even if I carried the bucket straight up and walked, it would be 0 work done since the horizontal force has nothing to do with the lifting part.. is this true? So in what cases would it be true that the bucket is doing water? I'm really confused..