1. The problem statement, all variables and given/known data A 50 kg woman dangles a 50 kg mass from the end of a rope. If she stands on a frictionless surface and hangs the mass over a cliff with a pulley as shown, the tension in the rope will be... 2. Relevant equations F = m*a 3. The attempt at a solution (no calculator allowed, so estimating) There are 3 forces acting in this diagram...gravity pulls down on the dangling mass, tension pulls up on the dangling mass, and the woman is pulled horizontally by tension. So I want to find the tension pulling up on the mass as well as the tension pulling on the woman, and then add them together. For the box: F(g) = 50 kg * 10 m/s^2 = 500 N This would equal the tension on the woman. But how do I find the tension on the box? I'm not even sure this first step was correct. Corrections to my general interpretation are very welcome!