dynamics/ physics work problem,?

Al L

New member
can someone please explain how to do this problem? i know f=integral of F.D ....
but i dont understand how everything works together. it woudl be integral of 4x^2 evaluted from 3 to 8 meters right?

an object moves along parabola y=4x^2, where x and y are given in meters. the action of the force F=(3N)i +(4N)j . determine the work done by this force as the objec tmoves along the parabola from x=3 meters and x= 8 meters.
 
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