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2. A boy pulls a 23.0-kg box with a 230-N force at 30° above a horizontal...

2. A boy pulls a 23.0-kg box with a 230-N force at 30° above a horizontal surface. If the coefficient of kinetic friction between the box and the horizontal surface is is 0.21 and the box is pulled a distance of 22.0 m, what is the work done by the friction force on the box?

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Answer #1

So , fence of friction (621):110 Fh.- PkN Fin= 2.3.184 etu) e.RM ,凡

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