Jane, whose mass is 51.4 kg, needs to swing across the river ?lled with man-eati

Question

Jane, whose mass is 51.4 kg, needs to
swing across the river ?lled with man-eating
crocodiles in order to rescue Tarzan. However, she must swing into a constant horizontal wind force of 109 N on a vine that is
initially at an angle of ? with the vertical.
The acceleration of gravity is 9.8 m/s
2
.
With what minimum speed must Jane begin her swing in order to just make it to the
other side? Assume that Tarzan has a mass
of 80 kg.
Answer in units of m/s.
Then with what minimum speed must they begin their speed when they swing back across the river?

Explanation / Answer

http://answers.yahoo.com/question/index?qid=20110119173146AAg57G7

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