1. The problem statement, all variables and given/known data The box on the frictionless ramp is held at rest by the tension force. The mass of the box is 20kg. What is the value of the tension force? 2. Relevant equations sine=opp/hyp cosine=adj/hyp F=ma 3. The attempt at a solution Did 20*9.8 to get the force of gravity on the object (196N). Then I took the cosine of 30 and got .866. I then divided 196 by this and got 226N for the hypotenuse. Is this correct? Thanks! DIAGRAM:http://img838.imageshack.us/img838/6927/diagramu.png [Broken] EDIT: So, the newtons needed to hold it when the slope is 0 would be 196. I also found the newtons for it at 89 degrees, which was about 11,000. So, according to my math, the tension force is 226N. Now I just need to find the normal force. Any ideas?