- #1
Mechanical Problem - Find Solution Here
- Thread starter MHD93
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Homework Help Overview
The discussion revolves around a mechanical problem involving a bar and a string, with participants exploring the nature of the motion and the variables involved, particularly the angle theta and its implications on the system's dynamics.
Discussion Character
- Exploratory, Assumption checking, Conceptual clarification
Approaches and Questions Raised
- Participants question the nature of the motion, particularly whether it is circular, and seek clarification on the definition of theta. There are discussions about the relationship between energy conservation and the variables in the problem.
Discussion Status
The conversation is ongoing, with some participants providing insights into potential approaches, such as using energy conservation principles. However, there is no explicit consensus on the interpretation of the problem or the definitions of key variables.
Contextual Notes
There is a note that the problem may not be a traditional homework question, and some participants express confusion regarding the setup and definitions provided in the original post.
- #2
hikaru1221
- 798
- 0
I don't think the bar will be in circular motion. The motion is rather complex since the string 1 is involved. And what is theta anyway? You haven't defined it yet.
- #3
MHD93
- 93
- 0
First of all, this question is not homework, Unknowingly was moved to this section!
Thanks for reply
Suppose string 1 is a solid and fixed bar; not a string actually :D, and on which the blue bar can freely rotate.
As for theta, as I said, it's how many degrees the blue bar rotates after string 1 is cut, in other words, it's the angle between the negative x-axis and the blue bar.
Thanks for reply
Suppose string 1 is a solid and fixed bar; not a string actually :D, and on which the blue bar can freely rotate.
As for theta, as I said, it's how many degrees the blue bar rotates after string 1 is cut, in other words, it's the angle between the negative x-axis and the blue bar.
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- #4
hikaru1221
- 798
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Use the law of energy conservation to find the relationship between angle theta and angular velocity, and then compute the integral to find angle theta w.r.t. time t. The integral is hard to compute, so use wolframalpha (http://integrals.wolfram.com/index.jsp) or any other tool. I believe the result won't look nice at all.
- #5
koolraj09
- 166
- 5
hey this is a typical textbook problem.