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Homework Statement
http://i43.tinypic.com/i1bq1i.jpg
I need help with number 9
Homework Equations
Wnet=change in KE
Wnc=Change in Energy
The Attempt at a Solution
I haven't been able to get the answer marked by the computer.
I tried Fs(h*cos15)=.5mv^2-mgh
and that is way off the anwser