1. The problem statement, all variables and given/known data An elevator in a tall building is allowed to reach a maximum speed of 3.89 m/s going down. What must the tension be in the cable to stop this elevator over a distance of 2.70 m if the elevator has a mass of 1320 kg including occupants? 2. Relevant equations Vfy^2 = Viy^2 + 2ay(Yf-Yi) F = ma (Newton's Second Law in the y-direction) 3. The attempt at a solution Vi = 3.89 T = ? Yf = 2.70 m Yi = 0 m = 1320 kg a = ? Using the first equation: 0 = (3.89)^2 + 2(ay) (2.70) ay = -2.80 m/s^2 Applying Newton's Second Law, I got: T - mg = ma T = mg + ma = (1320)(9.81) + (1320)(-2.80) = 9250.24 N However, the system says it's incorrect. Any help would be appreciated!