- #1
Finding Static Equilibrium: Solving for Unknown Angles
- Thread starter Ping427
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Discussion Overview
The discussion revolves around solving a problem related to static equilibrium, specifically focusing on how to incorporate angles into the calculations of forces and moments. Participants are addressing a question from a textbook and exploring the necessary steps to analyze the problem effectively.
Discussion Character
- Homework-related
- Technical explanation
- Conceptual clarification
Main Points Raised
- One participant expresses uncertainty about how to handle angles in the context of setting the sum of forces (ΣF) and the sum of moments (ΣM) to zero.
- Another participant suggests extracting a clear problem statement and creating a free body diagram to clarify known and unknown variables.
- A participant points out the importance of converting masses from grams to kilograms to express forces in Newtons correctly.
- There is a suggestion that the inclusion of an angle in the problem may be misleading or intended to confuse the solver.
Areas of Agreement / Disagreement
Participants do not appear to reach a consensus on the necessity of addressing the angle in the problem. Some express skepticism about its relevance, while others emphasize the need for clarity in the problem setup.
Contextual Notes
There are indications of missing assumptions regarding the problem setup, and the discussion reflects uncertainty about the role of angles in the calculations. The participants have not fully resolved how to approach the problem.
- #2
BvU
Science Advisor
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Hi Ping, welcome to PF 
!
Sure! To get started, extract a complete and concise problem statement from this moving stoy. That helps you sort out what's known/unknown and what's relevant/irrelevant. Then help us help you at the appropriate level by typing some equations relating the variables that occur.
What also heklps is a free body diagram showing the forces that act.
Then try to solve and type what you do. At the point where you get stuck we'll gladly help you further. Also see the guidelines.
PS my neck hurts from trying to read from bottom to top.
!Sure! To get started, extract a complete and concise problem statement from this moving stoy. That helps you sort out what's known/unknown and what's relevant/irrelevant. Then help us help you at the appropriate level by typing some equations relating the variables that occur.
What also heklps is a free body diagram showing the forces that act.
Then try to solve and type what you do. At the point where you get stuck we'll gladly help you further. Also see the guidelines.
PS my neck hurts from trying to read from bottom to top.
- #3
Ping427
- 7
- 0
This is what I did, but it looks wrong to meBvU said:Hi Ping, welcome to PF
Sure! To get started, extract a complete and concise problem statement from this moving stoy. That helps you sort out what's known/unknown and what's relevant/irrelevant. Then help us help you at the appropriate level by typing some equations relating the variables that occur.
What also heklps is a free body diagram showing the forces that act.
Then try to solve and type what you do. At the point where you get stuck we'll gladly help you further. Also see the guidelines.
PS my neck hurts from trying to read from bottom to top.
Attachments
- #4
SteamKing
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Why do you think you need to do anything with the angle? The location of the center of gravity for the music player is shown on the figure.Ping427 said:
If you want to express the reactions Ay and By in correct SI force units of Newtons, you should change the masses of the music player and the docking station from grams to kg at the beginning.
- #5
Ping427
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So they just place a angle there to trick me?SteamKing said:Why do you think you need to do anything with the angle? The location of the center of gravity for the music player is shown on the figure.
If you want to express the reactions Ay and By in correct SI force units of Newtons, you should change the masses of the music player and the docking station from grams to kg at the beginning.
- #6
SteamKing
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Sadly, yes.Ping427 said:
- #7
Ping427
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Thank you for telling me!SteamKing said:
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