Pulley Tension friction help?? 1. The problem statement, all variables and given/known data http://www.flickr.com/photos/72384417@N06/6533043261/ [Broken] by LiFK1, on Flickr Mass1 = 0.750 kg Mass2 = 0.52 kg Fk=2.1 N g= 9.8 N 2. Relevant equations F=ma Mass1(gravity)= (Mass1+mass2)Acceleration T + m2g - fk = (m1 + m2)a 3. The attempt at a solution Mass1(gravity)= (Mass1+mass2)Acceleration 7.35=(0.750kg+0.52kg)A 5.787 N = A T + m2g - fk = (m1 + m2)a T + 0.52kg(9.8)-2.1=1.27(5.78) T = 4.35 N rounded up T = 4.4N Apparently the answer to this is 4.2 N, but i cant seem to get it. Can someone tell me what im doing wrong? thanks in advance.