Hello guys, i have a question i would like to ask. A worker of mass 80kg stands in a platform of mass 40kg pulls the platform up with an acceleration of 2.5ms^-2 using a smooth pulley as shown in the figure. what is the tension T in each side of the rope (g = 10 ms^-2). The figure : A man standing in a platform, the platform is attached to a string which is over a pulley and the man is pulling the other side of the string. I thought of F-mg = ma which will be F = (120)(2.5) + 1200 but its wrong @_@. Can someone tell me?