Asked by Nikita
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?
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?
Answers
Answered by
drwls
d)
In a, b, and c, the motion is perpendicular to the force and the force does no work.
In a, b, and c, the motion is perpendicular to the force and the force does no work.
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