1. The problem statement, all variables and given/known data There is a piano that is being lowered 5 m. It has gravity force acting in y-direction (down) of 2500 N. Then it has two ropes attached, they are vectors that are pointing up and out. so T1 is 1830N [W60[tex]\circ[/tex]N] and T2 is 1295N [E45[tex]\circ[/tex]N] 2. Relevant equations so the work by gravity is 12500 J the work by T1 is 4575 J (opposite direction to work by gravity) 3. The attempt at a solution so it would make sense that the work by T2 is somewhere close to 7000 J so that the net work is 0. but when i calculate it i get around 4000 J. Can someone check my math... For T2: W = Fcos[tex]\theta[/tex][tex]\Delta[/tex]r = 1295*cos45*(5) = 4579 J ???? - thnx!