The response of a mass suspended between two poles to an angle of heel

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Discussion Overview

The discussion revolves around the dynamics of a yacht suspended between two poles on a barge, specifically focusing on how to relate the angle of heel (\varphi) to the angles of the straps. Participants explore the conditions under which the yacht remains upright while being free to slide along the straps, and seek insights into the governing equations for this scenario.

Discussion Character

  • Exploratory
  • Technical explanation
  • Mathematical reasoning

Main Points Raised

  • One participant describes a project involving a yacht suspended by straps and seeks to relate the angle of heel to the angles of the straps.
  • Another participant suggests drawing the scenario in a heeled condition to begin formulating governing equations.
  • A question is raised about determining the exact position of the mass when the structure is heeled, with a suggestion to derive forces in the x and y directions.
  • It is proposed that the problem can be approached either as a dynamics problem to find the dynamic position of the mass or as a statics problem to find the static position, starting with summing forces on the mass.

Areas of Agreement / Disagreement

Participants appear to agree on the need to analyze the forces acting on the mass, but there is no consensus on the specific approach to take (dynamics vs. statics) or on how to derive the governing equations.

Contextual Notes

The discussion does not clarify the assumptions regarding the forces acting on the mass or the specific conditions under which the yacht remains upright. There are also unresolved mathematical steps in deriving the governing equations.

stavsantis
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I am currently conducting a project where a yacht will be suspended in air by two straps which are connected together by two poles. The poles will be mounted on a barge and therefore I want to find how I can relate the angle of heel ([itex]\varphi[/itex]) to the two angles. Although the yacht will remain upright and not heel with the motion of the barge, due to its keel, it is free to slide along the strap to the most natural position. I attached a simplified 2D sketch of what I mean. In the level condition θl = θr. Any insight or where I can look to find the solution to my problem would be greatly appreciated!
 

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    suspended yacht.jpg
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Draw the picture in the heeled condition, and then you should be in a position to start writing the governing equations.
 
But how will I know the exact position of the mass when the structure is heeled? would it just be by deriving the forces in the x and y directions??
 
You can treat it as a dynamics problem,and thus try to solve for the dynamic position of the mass, or you can treat it as a statics problem and solve for the static position of the mass. Either way, you start with summing forces on the mass in an unknown position.
 

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