Wheel torque > contact patch friction > torque

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SUMMARY

The discussion centers on the relationship between wheel torque, contact patch friction, and the resulting torque at the contact patch. It is established that when torque is applied to a wheel, the friction at the contact patch resists this force, creating an equal and opposite torque around the contact patch. This analysis assumes a static case or minimal movement, neglecting the moment of inertia for simplicity.

PREREQUISITES
  • Understanding of basic physics principles, specifically Newton's third law of motion.
  • Familiarity with torque and its application in rotational dynamics.
  • Knowledge of friction and its role in motion, particularly at contact patches.
  • Basic comprehension of static versus dynamic scenarios in mechanics.
NEXT STEPS
  • Research the principles of torque in rotational mechanics.
  • Study the effects of friction on motion, focusing on contact patch dynamics.
  • Explore the implications of moment of inertia in torque calculations.
  • Investigate real-world applications of torque and friction in automotive engineering.
USEFUL FOR

Automotive engineers, physics students, and anyone interested in the mechanics of wheel dynamics and frictional forces.

WildEnergy
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Am I correct in saying that when a torque is applied to a wheel
the force is resisted by the friction at the contact patch
and then becomes a "equal and opposite" torque acting around
the contact patch?
 
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If you neglect moment of inertia. (static case or small force, slow movement)
 

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