- #1

R_H_A

- 1

- 0

## Homework Statement

Tarzan (mass of 80kg) has an 18m vine stretched horizontally from his hut to a pivot point P, as shown. He uses it to swing across the gorge to visit Jane's hut, starting from rest to conserve energy. One day Jane spoiled his plans by fastening a strong, thin, smooth, horizontal branch to intercept the vine at B, 15m directly below P. Tarzan hung on and followed the dotted path 1 to 2 to 3. Calculate the tension in the vine as he passed through point 3. How many times greater than his weight is his tension?

The answer is 15.34 (I'm unsure which question this answers)

## Homework Equations

Ug =mgh

ΣE = 0

Ek = 0.5mv

^{2}

ΣF = ma

## The Attempt at a Solution

1: [/B]Ug = 80(9.81)(18)= 14,126.4 J

Ek = 0.5mv

^{2}= 0

**2:**Ug = 0

Ek = 0.5mv

^{2}

14 126.4= 0.5mv

^{2}

v = 18.795 m/s

Ft = mg = 784.8 N

Last edited: