A 115.0 kg box is pushed by a horizontal force F at constant speed up a frictionless ramp which makes an angle of 49.0 deg with the horizontal. Find the magnitude of the applied force F. I can't seem to get this problem right. In the x-direction there is a push. Which I got mgsin(49). In the y-direction there is the normal force and mg. mg is negative and I think the normal force is mgcos(49). I'm not positive if this is right but when i add -mg+mgcos(49) and do vector addition on the x and y directions I get the wrong answer. What am i doing wrong?