Determine the percent of the work is lost to friction

Reference no: EM13511511

A 4.3- kg box of books is pulled up a 4.76- m-long inclined plank to a height of 1.4 m. A force of 25.6 N parallel to the incline is needed to pull the box up the plank.

How much work is done by the 25.6- N force?

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

Reference no: EM13511511

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