A 34.1- kg block (m1) is on a horizontal surface, connected to a 6.5- kg block (m2) by a massless string as shown in the Figure. The pulley is massless and frictionless. A force of 235.3 N acts on m1 at an angle of 28.9 o. The coefficient of kinetic friction between m1 and the surface is 0.181. Determine the upward acceleration of mg. F V a 1112 :l Did you consider the effect of the applied force F on the friction force? SubmitAnswer Incorrect. Tries 1/8 Previous Tries