80 kg Tarzan grabs a vine to swing to another tree.a. As Tarzan swings from point A to point B, describe qualitatively how the tension in the vine changes and why. Since the net force is inversely proportional to the radius (if the speed does not change), one fourth the radius will give a net force 4 times larger.b. At point B he is swinging at 7 m/s and the vine is 8 meters long. How hard does he have to hang on to the vine to keep from slipping off?