What percent of the work is lost to friction

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Reference no: EM13488933

A 4.7- kg box of books is pulled up a 4.16- m-long inclined plank to a height of 1.8 m. A force of 28.1 N parallel to the incline is needed to pull the box up the plank. How much work is done by the 28.1- N force?

What percent of the work is lost to friction (no units)?

Reference no: EM13488933

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