a 3kg object sits on table with a pulley attached to it. there is a M object hanging from the pulley. dropped from rest the system moves 127.5cm in 1.65951s. there is no friction. what is the value of the mass M. i used x=vot+1/2at^2 to find the accleration of the 3kg object. it is .9729m/s^2. T=ma=2.77. for the M object, is it T=W?