Concept explainers
The reason that the
Answer to Problem 45A
It is because the centripetal force acts in the perpendicular direction to the motion of the object.
Explanation of Solution
Introduction:
Work done by a force
Where,
Now the centripetal force acts along the radius of the circle, while the tangential velocity of the object moving in a circle is always along the tangent at the considered point.
Hence, the centripetal force will always be perpendicular to the direction in which the object is being displaced due to which the work done will always be zero.
Conclusion:
Therefore, the centripetal force does not do any work on the object moving in a circle.
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Conceptual Physics: The High School Physics Program
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