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1. Homework Statement
http://i43.tinypic.com/i1bq1i.jpg
I need help with number 9
2. Homework Equations
Wnet=change in KE
Wnc=Change in Energy
so I'm assuming the energy dissipated means the work done by friction?
so work of friction is umgcos(15)*d
d=cos(15)h
I got that work of friction is -9.8257
Help?
http://i43.tinypic.com/i1bq1i.jpg
I need help with number 9
2. Homework Equations
Wnet=change in KE
Wnc=Change in Energy
The Attempt at a Solution
so I'm assuming the energy dissipated means the work done by friction?
so work of friction is umgcos(15)*d
d=cos(15)h
I got that work of friction is -9.8257
Help?