- #1
FannoFlow88
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- Homework Statement
- more a query on meaning of star. i think static but unsure
- Relevant Equations
- T/Tstar
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The * symbol in the table indicates the throat location, which is associated with the risk of choking. This highlights the importance of awareness regarding potential hazards in that area. Understanding the significance of this symbol can enhance safety measures. The discussion emphasizes the need for clear communication about choking risks. Proper identification of such hazards is crucial for prevention.
- #2
Lnewqban
Homework Helper
Gold Member
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The * symbol represents the throat location, where choking can occur.
Please, see:
https://en.wikipedia.org/wiki/Rayleigh_flow
Please, see:
https://en.wikipedia.org/wiki/Rayleigh_flow
My attempt:
Initial total M.E = PE of hanging part + PE of part of chain in the tube. I've considered the table as to be at zero of PE.
PE of hanging part = ##\frac{1}{2} \frac{m}{l}gh^{2}##.
PE of part in the tube = ##\frac{m}{l}(l - h)gh##.
Final ME = ##\frac{1}{2}\frac{m}{l}gh^{2}## + ##\frac{1}{2}\frac{m}{l}hv^{2}##.
Since Initial ME = Final ME. Therefore, ##\frac{1}{2}\frac{m}{l}hv^{2}## = ##\frac{m}{l}(l-h)gh##. Solving this gives: ## v = \sqrt{2g(l-h)}##. But the answer in the book...