Linear force vs Torque vs Axial force

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SUMMARY

Torque and axial force are distinct from linear force, each serving unique purposes in mechanical applications. The discussion highlights that using a lever can amplify force or the distance over which it operates. In the context of needle insertion, the technique varies based on the surface being penetrated; lateral resistance is greater when pushing across the skin, while perpendicular force encounters minimal resistance until deeper layers are affected. Understanding these dynamics is crucial for effective application in various scenarios.

PREREQUISITES
  • Basic understanding of mechanical forces
  • Familiarity with lever mechanics
  • Knowledge of needle insertion techniques
  • Concept of lateral versus perpendicular force application
NEXT STEPS
  • Research the principles of torque in mechanical systems
  • Study the mechanics of levers and their applications
  • Explore techniques for effective needle insertion in medical procedures
  • Learn about the effects of surface resistance on puncturing forces
USEFUL FOR

This discussion is beneficial for medical professionals, engineers, and anyone interested in the mechanics of force application, particularly in contexts involving puncturing or penetration techniques.

PhysicsKnight
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Is it true that torque and axial force are stronger than linear force? If I hit something with an acute angle and progressively turn it into a lower angle while moving forward,is it applying more force?( for example needle insertion)
 
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PhysicsKnight said:
Is it true that torque and axial force are stronger than linear force? If I hit something with an acute angle and progressively turn it into a lower angle while moving forward,is it applying more force?( for example needle insertion)
Hi
They are two entirely different things. Using a lever can magnify a force or magnify the distance that a force operates.
It is not clear exactly what situation you are actually describing but, if you are actually asking about inserting a needle into skin (?) or some surface then the technique will depend on the nature of the surface. The skin is probably tougher than the substrate (fat?) so when pushing across the surface with the needle, the lateral resistance is greater so the puncturing force will be greater for a given amount of movement. Pushing perpendicularly into the skin will encounter very little resistance until the fat underneath has depressed by an alarming degree - so you only achieve the required puncturing force after a large amount of movement.
The above is only an example but it could apply to many other situations.
 
Hi,thnks for replying. What do you mean by lateral and perpendicular in this scenario?
 
Sideways and head on to the surface.
 

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