How much work is done on the mass by the tension

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The discussion centers on the physics of circular motion, specifically analyzing the work done on a 55-gram mass swung in a horizontal circle with a 0.75-meter string. It is established that the work done by the tension in the string during one complete revolution is zero, as the force of tension is orthogonal to the displacement of the mass. This conclusion aligns with the work-energy theorem, which states that work is done when a force causes displacement in the direction of the force.

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UNknown 2010
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. You swing a 55-g mass on the end of a 0.75-m
string around your head in a nearly horizontal circle
at constant speed, as shown in Figure 11-16.
a. How much work is done on the mass by the
tension of the string in one revolution?
b. Is your answer to part a in agreement with
the work-energy theorem? Explain.
my answer
a-the work is zero because the distance and Force are Orthogonal
b- I do not have answer for this question
 
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UNknown 2010 said:
a-the work is zero because the distance and Force are Orthogonal
Good.
b- I do not have answer for this question
What does the work-energy theorem say?
 

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