High Pressure in Tyres, Won't Burst

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SUMMARY

The discussion centers on the mechanics of a bicycle tyre inflated to 600kPa at sea level, where the atmospheric pressure is 101kPa. The internal pressure creates a net force that does not exceed the structural integrity of the tyre material, preventing it from bursting. Participants analyze the forces acting on the tyre using free body diagrams, emphasizing the balance between internal and external pressures.

PREREQUISITES
  • Understanding of pressure concepts, including gauge and absolute pressure.
  • Familiarity with free body diagrams and force analysis.
  • Basic knowledge of material science related to tyre construction.
  • Concept of equilibrium in physics.
NEXT STEPS
  • Research the properties of materials used in tyre manufacturing.
  • Learn about pressure differentials and their effects on structures.
  • Study the principles of fluid mechanics as they relate to gases.
  • Explore safety factors in engineering design, particularly for inflatable structures.
USEFUL FOR

Physics students, mechanical engineers, and anyone interested in the safety and design of inflatable structures like tyres.

Kyoma
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Homework Statement


At sea level, an inflated bicycle tyre has an internal pressure of 600kPa. The atmospheric pressure is 101kPa at sea level. (1 bar = 100kPa). The question is: why won't the tyre burst?

There is more pressure in the tyre, thus more force?
 
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Hey,
On the free body diagram of a small part of tyre, what forces seem to be acting ?
 

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