You are visiting your friend fabio's house. you find that, as a joke, he filled his swimming pool with kool-aid, which dissolved perfectly into the water. however, now that you want to swim, you must remove all of the kool-aid contaminated water. the swimming pool is round, with a 9 foot radius. it is 8 feet tall and has 7.5 feet of water in it. how much work is required to remove all of the water by pumping it over the side? use the physical definition of work, and the fact that the density of the kool-aid contaminated water is σ=63.5lbs/ft3

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.