Hydrostatic pressure. a rectangular vertical plate is submerged in water. the top edge is horizontal and at a depth of 0.6m. the length of the vertical edge is 1.2m. determine at what dept under the water surface a horizontal line can be drawn on the plate such that the hydrostatic forces on either side of the line is equal. (hint: the magnitude of the hydrostatic force on a vertical surface is equal to the average pressure x the area. fluid mechanics

Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.