1. The problem statement, all variables and given/known data A 1.2 m long pendulum reaches a speed of 4.0 m/s at the bottom of its swing. What is the tension in the string at this position? 2. Relevant equations Fnet=Mv^2/r 3. The attempt at a solution Im my FBD I had FT acting up, and fg acting down. Ft-Fg=mv^2/r Ft-mg=mv^2/r Ft -(9.8)(3)=(3)(4.0)^2/(1.2) Ft=40 +(9.8)(3.0) EDIT Realized my mistake less than a second after posting this. :) Mods can delete.