1. The problem statement, all variables and given/known data This is the question straight from my worksheet... Tarzan tries to cross a river by swinging a vine that is 10.0 m long. His speed at the bottom of the swing is 8.0 m/s. Tarzan does not know that the vine has a breaking strength of 1.0 X 10^3 N. What is the largest mass Tarzan can have and make it safly across the river? 2. Relevant equations ? 3. The attempt at a solution ?