1. The problem statement, all variables and given/known data Two masses are joined together by a massless, inextensible string. A vertical force of 30 N applied to the upper mass gives the system a constant upward acceleration of 3.2 m/s^2. If the tension in the connecting string is 18 N, what is the smaller of two masses? If the tension in the connecting string is 18 N, what is the bigger of two masses? F= 30 T=18 m=1.4 a=3.2 g=9.8 2. Relevant equations F(net) = m*a 3. The attempt at a solution The lower block can be solved for by: T/(g+a) = M which is 1.4kg but I can't get the value of the upper block(which I know should be smaller then 1.4) M=(F+T-ma-mg)/(a+g) F=30 T=18 m=1.4 a=3.2 g=9.8 when I do this M= 2.3 but it should be smaller then 1.4 because I know 1.4 is the larger block.