First slide
Work
Question

A particle is displaced from a position vector  4i^+2j^m  to 2i^+3k^m  by applying a force of  f=3x2i^+2yj^N. The work done is 

Moderate
Solution

W=Fxdx+Fydy+FzdzW=423x2dx+202ydy+0W=3x3342+2y2220W=(864)+(04)=564W=60J

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