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Origin: sally.csie.ntu.edu.tw

[領域]                             靜力學
[來源]                             習題

[題目]
A chain of mass M hangs between two walls, with its ends at the same height.
The chain makes an angle of θ with each wall.
Find the tension in the chain at the lowest point, using the fact that the
height of a hanging chain is given by y(x)=(1/a)cosh(ax).

  ||                 ||
  ||\               /||
  || \             / ||
  ||θ\           /θ||
  ||   \_________/   ||


[瓶頸]   看了好久不懂怎麼把cosh跟θ和tension連貫起來..能不能指點一下  <(_ _)>


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