Secondary Forces Explored - Comments

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In summary, klotza submitted a new PF Insights post Secondary Forces Explored. The post discusses the concept of secondary forces, specifically the weak force and its relationship with neutrinos. The conversation in the comments also touches upon the interesting notion of how tidal fields can reshape rotating planets or moons, leading to tidal locking. Further calculations and explanations can be found in the link provided.
  • #1
klotza
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klotza submitted a new PF Insights post

Secondary Forces Explored

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Continue reading the Original PF Insights Post.
 
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  • #2
Nice article!

The weak force sucks. Neutrinos are cool though.

:rolleyes:
 
  • #4
Truly insightful, thanks for sharing !
 
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  • #5
Useful nucleus said:
Truly insightful, thanks for sharing !
Glad you enjoyed.
 
  • #6
This is an interesting notion.

When tidal fields reshape rotating planets or moons, this can effect how those objects rotate. When an object is elongated, it is in a preferred tidal configuration, and as it rotates out of that configuration, there is a residual torque resisting its rotation, which over long periods of time slows down the rotation period until it matches the orbital period, such that the object can always have its preferred* configuration in the tidal field. This is why the same side of the moon always points at the Earth, and why over long periods of time the Earth’s rotation is slowing down, until its same side will always be pointing at the moon**.

Do you have any calculations or further explanations?
 
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FAQ: Secondary Forces Explored - Comments

What is the purpose of studying secondary forces?

The purpose of studying secondary forces is to understand the various factors that affect the behavior of structures and materials under different loading conditions. This knowledge is crucial for designing safe and efficient structures.

What are some examples of secondary forces?

Examples of secondary forces include thermal expansion, creep, moisture expansion, and differential settlement.

How do secondary forces differ from primary forces?

Primary forces are external loads that directly act on a structure, while secondary forces are internal forces that arise due to the deformation or movement of a structure under primary loads.

What are some methods for mitigating the effects of secondary forces?

Some methods for mitigating the effects of secondary forces include using expansion joints, providing proper drainage, and using materials with low coefficients of expansion.

How do secondary forces impact the design process?

Secondary forces can significantly impact the design process as they can cause unexpected deformations and stresses in a structure. Therefore, they must be carefully considered and accounted for in the design to ensure structural integrity.

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