2 block tension problem.... I dont have a good picture to put up, but this is what is given in my book: A force of 12 N is exerted on a 1.0 kg block. Both the force and the block are both on a plane that is at a 37 degree angle with the ground. A rope connects this block to another block (this time 3.0 kg) that is on the flat ground (to the left of the incline according to the picture) by means of a pulley. please excuse the horrible animation. I have to calculate (assuming frictionless and massless pulley and plane) the force of tension in the connecting cord. I tried using F - mgsin37 = ma for the 1 kg block, but this doesnt give me the answer that is in the back of the book (which is 4.6 N). I am really not sure how to derive tension, it is my biggest weakness in dynamics, at least when the pully is not working with ropes which are at right angles with each other.