The figure shows an arrangement in which four disks are suspended by cords. The longer, top cord loops over a frictionless pulley and pulls with a force of magnitude 93.4 N on the wall to which it is attached. The tensions in the shorter cords are T1 = 61.4 N, T2 = 41.5 N, and T3 = 7.9 N. What are the masses of (a) disk A, (b) disk B, (c) disk C, and (d) disk D?

1 answer

Can't help without the picture, but to me it seems like all you have to do is divide each tension force by g.