Help finding direction of area vector on curved surfaces

  • Thread starter bfusco
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  • #1
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Homework Statement


I understand how to determine the direction on rectangular surfaces, however when it comes to a cylinder or sphere or, in the case of the problem i am working on now, for a long rod that has been bent around in a circle i.e a a rectangular ring, I dont know what to do.
 

Answers and Replies

  • #2
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The direction of the area vector is given by the normal to the surface. At the curved side of a circular cylinder, that is simply the radial direction.
 

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