How much work is done on the mass by the tension

In summary, the conversation discusses swinging a 55-g mass on a 0.75-m string at constant speed in a horizontal circle. When asked about the amount of work done by the tension of the string in one revolution, the answer is zero due to the orthogonal relationship between distance and force. When questioned about the work-energy theorem, the response is that there is no answer available. The work-energy theorem states that the net work done on an object is equal to the change in its kinetic energy.
  • #1
UNknown 2010
77
0
. 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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  • #2


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?
 

1. What is the definition of work in terms of physics?

In physics, work is defined as the application of a force over a distance, resulting in the movement of an object.

2. How is work calculated in the context of tension and mass?

The work done on an object by tension is calculated by multiplying the tension force by the displacement of the object in the direction of the tension force.

3. Does the mass of an object affect the amount of work done by tension?

Yes, the mass of an object does affect the amount of work done by tension. The greater the mass, the more work is required to move the object a certain distance.

4. Is work done on the mass by tension always positive?

No, work done on the mass by tension can be either positive or negative. If the tension force and the displacement are in the same direction, the work is positive. If they are in opposite directions, the work is negative.

5. How does the angle between the tension force and the displacement affect the work done on the mass?

The angle between the tension force and the displacement affects the work done on the mass by tension. The work is greatest when the angle is 0 degrees (tension force and displacement are in the same direction) and is least when the angle is 180 degrees (tension force and displacement are in opposite directions).

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