1. The problem statement, all variables and given/known data The pulley is essentially weightless and frictionless. If M1= 10.0 kg and the second mass M2 weighs 98.1 Newtons, what is the tension in the rope and the acceleration of M1 ? 2. Relevant equations FT=mg F=ma FT = tension m=mass g=gravity (9.81) a=acceleration 3. The attempt at a solution FT=mg ---> FT=(10)(9.81) = 98.1 Newtons a= FT / m a= 98.1/10 = 9.81 m/s2 The tension answer is right, but the acceleration should be 0. How would it be 0? What am i doing wrong? Thanks.