Question about work energy theorem

AI Thread Summary
The discussion centers on a homework question regarding the work-energy theorem, specifically how to determine the maximum speed at an angle of 120 degrees without using vector integration. The participant expresses difficulty in solving part 5 of the problem and considers the integration approach too complex for a four-mark question. Another contributor suggests that writing the integral while considering a constant force can simplify the process. This indicates that there may be a more straightforward method to find the maximum speed using the work-energy principle. Ultimately, the conversation highlights the challenges of applying theoretical concepts to practical problems in physics.
Clara Chung
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Homework Statement


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Homework Equations

The Attempt at a Solution


I don't know how to do part 5, I know the point of maximum speed is at an angle of 120 degrees because the work starts to be negative, but how do I find of the maximum speed at that point without using vector integration? (I tried to integrate from theta = 0 to 2 pi /3 but I think it is a bit complicated for a 4 marks question.)
 

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Clara Chung said:
how do I find of the maximum speed at that point without using vector integration
Nevertheless, if you write the integral and bear in mind that ##\vec F## is constant you may find it is quite easy.
 
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