The legend

Right i get the hint! I made these equations m3 - 2T = 0 m1 - T = m1 * -a m2 - T = m2 * a then substituting values of T and equating I got 4/m3 = 1/m2 + 1/m1 which is the right answer. Thanks for your help!!

Hello everyone! This isnt exactly homework but I wanted to try out the sum on my own so I felt right posting this here. In the figure in attachment there are three masses m1 , m2 , m3 all of which are unequal. Then what must be the relation between the masses to keep m3 stationary? (neglect friction and string and pulleys are massless) So my attempt was that for it to remain stationary (mass on both sides should be equal)m3 = m2 + m1. But thats not what the answer is. So can anyone give me a hint? sum.bmp