Tarzan wants to swing on a vine across a river. He is standing on a ledge above the water’s edge, and the river is 5.00 m wide. The vine is attached to a tree branch that is 8.00 m directly above the opposite edge of the river. Initially the vine makes a 60.0° angle with the vertical as he is holding it. He swings across starting from rest, but unfortunately the vine breaks when the vine is 20.0° from the vertical. 

(a) Assuming Tarzan weighs 900.0 N, what was the tension in the vine just before it broke? 

(b) Does he land safely on the other side of the river?

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60.0° 8.00 m 5.00 m