Tarzan (mass 80kg ) swings at the end of an 8.0-m-long vine shown in the figure(Figure 1) . When directly under the vine's support, he releases the vine and flies across a swamp. When he releases the vine, he is 5.0 mabove the swamp and 10.0 m horizontally from the other side.
Determine the force the vine exerts on him at the instant before he lets go (the vine is straight down when he lets go).