How Does Spinning a Mass Affect Atomic Spacing in a Wire?

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SUMMARY

The discussion focuses on the effect of spinning a mass attached to a wire on atomic spacing. By applying Young's modulus (Y) and Newton's second law, participants explore how to calculate the force exerted on the wire and subsequently determine the extension of the wire. The key equations involve stress and strain, where stress is derived from the applied force and strain is the resulting deformation. The conversation emphasizes the importance of understanding these fundamental principles to analyze atomic movement in materials under dynamic conditions.

PREREQUISITES
  • Understanding of Young's modulus and its application in material science
  • Familiarity with Newton's second law of motion
  • Basic knowledge of stress and strain concepts
  • Concept of circular motion and acceleration
NEXT STEPS
  • Research the calculation of stress and strain in materials using Young's modulus
  • Learn about the dynamics of circular motion and its effects on materials
  • Explore the relationship between force, mass, and acceleration in physics
  • Investigate atomic structure and how external forces influence atomic spacing
USEFUL FOR

Physics students, materials scientists, and engineers interested in the mechanical properties of materials and the effects of dynamic forces on atomic structures.

quark001
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I whirl a mass m attached to a wire with length L and diameter d around my head in the horizontal plane. The mass takes t seconds to move around a circle. How far do the atoms in the wire move apart, compared to their spacing at rest? Young's modulus is given.

Okay, so Y = stress/strain. For strain I need the force on the wire, and from there I can solve for the extension of the wire and use that to calculate how far the atoms move. But how do I get the force?
 
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quark001 said:
But how do I get the force?
Apply Newton's 2nd law to the mass. What's its acceleration?
 

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