How High Does Tarzan Swing From Point A to B?

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Tarzan swings from point A to point B, starting from rest at a 60-degree angle with a 10 m vine. The height difference between points A and B is calculated to be 1.34 m, resulting in Earth's gravity doing approximately 4387.80 Joules of work on him during the swing. To determine Tarzan's speed at point B, the conservation of energy principle can be applied, considering potential and kinetic energy. The tension in the vine at point B can be found using the centripetal force equation and the gravitational force acting on Tarzan. Further calculations are needed to solve for speed and tension accurately.
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Tarzan swinging on a vine...PLEASE HELP

starting from rest at point A, Tarzan (whose mass = 100kg) swings on a 10 m long vine, which initially makes a 60deg angle with with the vertical.

a) how much lower than the starting point A is Tarzan, when he reaches point B, the lowest part of his swing?
i got 1.34

b)how much work has Earth's gravity done on tarzan between points A and B
i got 4387.80Joules

c) how fast is tarzan moving at point B? neglect friction
> i don't understand how to approach this one
d) what is the tension in the vine when tarzan passes throught point B?
> yeh don't know about this one either
 
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