What percent of the work is lost to friction

Reference no: EM13488094

A 4.5- kg box of books is pulled up a 3.66- m-long inclined plank to a height of 1.4 m. A force of 22.1 N parallel to the incline is needed to pull the box up the plank. How much work is done by the 22.1- N force? What percent of the work is lost to friction (no units)? Please show work!

Reference no: EM13488094

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