4-62. Water flows into the tank through two pipes. At A the flow is 400 gal/h, and at B it is 200 gal/h when d = 6 in. Determine the rate at which the level of water is rising in the tank. There are 7.48 gal/

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.

massxgravity x heght=weightxheight= pe

4900=490xh

h=10