Tarzan (m = 85.0 kg) tries to cross a river by swinging form a vine. the vive is 10.0m long, and his speed at the bottom of the swing (as he just clears the water) is 8.00 m/s. Tarzan doesn't know that the vine has a breaking strength of 1000 N. Does he make it safely across the river? What is the centripetal force? What is the radius?