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August 28, 2014

Homework Help: Physics

Posted by Nikita on Tuesday, November 10, 2009 at 8:50pm.

Which of the following forces does NOT have a zero work done on the object:


a)The normal force on a box that slides across a horizontal level floor.

b)The weight on a box that slides across a horizontal level floor.

c)The normal force on a box that slides down an inclined plane.

d)The weight on a box that slides down an inclined plane.

e)Actually all of the above describe forces that do zero work.


I think the answer is e) since all of them involve a force moving through a distance?

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