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1irishman
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Homework Statement
A 735N mountain climber is rappelling down the face of a vertical cliff as shown in the diagram. If the rope makes an angle of 12deg with the vertical face, what is the tension in the rope?
Homework Equations
Fnet=ma
trig functions
Ff=uFN
The Attempt at a Solution
I separated force into x and y components
X
---
FN-Tx=0
therefore FN=Tx
Y
----
Ff+Ty-mg=0
Ff=uFN=uTx
uTx+Ty-mg=0
uTcos78+Tsin78-mg=0
I need help from here...the answer in the book says 751N, so i don't know...maybe i setup my net force equation wrong?