Problem about work done by the vector: F

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makyol
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Homework Statement



[PLAIN]http://www.netbookolik.com/wp-content/uploads/2010/07/q.png

Homework Equations





The Attempt at a Solution

 
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Here's a hint, the work done is given by:
[tex] \int_{C}\mathbf{F}\cdot d\mathbf{r}[/tex]
 

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