1. The problem statement, all variables and given/known data Two masses, located on a frictionless, horizontal surface, are tied together by a string. The masses are attached to a second string which passes over a pulley and has a third weight attached which hangs vertically. Find the acceleration of the system and the tensions of the horizontal strings. (uk: .15) Mass 1= 10 kg attached to Mass 2: 20kg attached to mass 3 (vertical): 15kg. 2. Relevant equations F=ma a= (m2-ukm1)g/ (m1+m2) a= (m2-m1)g/ (m1+m2) 3. The attempt at a solution a= (15-.15*30)9.8/ 45 a= 2.3 m/s2 Please help ASAP!!!!