Two boxes are tied together by a light string on a frictionless ramp at 22° to the horizontal. The upslope mass with mass of 2.9 kg is also tied above it to a wall. So, the upslope mass is then tied above and below. The downslope mass has a mass of 4.5 kg. Both strings are parallel to the ramp. What is the tension in the string tied between the masses? What is the tension between the wall and the upslope mass?