What Determines the Position of Antinodes in Standing Waves?

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SUMMARY

The position of antinodes in standing waves is determined by the equation y(x,t) = 2Asin(kx)cos(wt). To find the positions of antinodes, one must set sin(kx) = 1, which occurs at specific values of kx. The solution to the equation sin θ = 1 is critical in deriving the final equation for the positions of antinodes. This discussion emphasizes the importance of understanding the relationship between the wave equation and the sine function.

PREREQUISITES
  • Understanding of wave equations, specifically y(x,t) = 2Asin(kx)cos(wt)
  • Knowledge of trigonometric functions, particularly the sine function
  • Familiarity with the concept of standing waves
  • Basic calculus for deriving equations
NEXT STEPS
  • Study the derivation of standing wave equations in detail
  • Explore the properties of the sine function and its applications in wave mechanics
  • Learn about the physical significance of antinodes and nodes in standing waves
  • Investigate related topics such as harmonic frequencies and resonance in wave systems
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Students of physics, educators teaching wave mechanics, and anyone interested in the mathematical modeling of wave phenomena.

Nubs
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The eq. of standing waves is y(x,t) = 2Asin(kx)cos(wt). Derive the eq. for postion of antinodes.

I know I can figure it out by assuming sin(kx) = 1, but I can't figure out how to get from there to final eq.

Any help? Thanks.
 
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Welcome to PF :smile:

Can you solve this related equation:
sin θ = 1​
That will help with finding the solution to sin(kx)=1.
 

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