A 33.1- kg block (m1) is on a horizontal surface, connected to a 5.7- kg block (m2) by a massless string. The pulley is massless and frictionless. A force of 236.1 N acts on m1 at an angle of 30.9 °. The coefficient of kinetic friction between m1 and the surface is 0.217. Determine the upward acceleration of m2. Now where I'm getting stuck is trying to determine the tension in the string between the two masses, because in either equation you have two unknowns, the tensile force and the acceleration. I thought that possibly merging the two equations could help. Am I on the right track, or completely off??