1. The problem statement, all variables and given/known data Tarzan swings from a vine 20 m long which makes an angle of 30° with the vertical. If he pushes off with a speed of 2 m/s, what is the tension in the vine at the lowest point of the swing? Tarzan has a mass of 80 kg. 2. Relevant equations centripetal accelaration force = F m = mass r = radius of circle v = tangential speed F=m(v^2)/r 1/2mv^2 + mgh = 1/2mv^2 (I'm not sure about this, though) 3. The attempt at a solution F = 80 (2^2)/ 20 F = 16 N I don't know how to integrate the angle measure into the problem.