Solving an ODE: Seeking Help on Mechanics Problem

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SUMMARY

The discussion focuses on solving the ordinary differential equation (ODE) given by (dS/dx)^2 + mw^2x^2 = a, where m and w^2 are constants. A user seeks guidance on how to approach this problem, as it has not been covered in their ODEs class. The solution involves rewriting the equation as (dS/dx)^2 = a - mw^2x^2 and taking the square root, which leads to two separable differential equations for the positive and negative roots.

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  • Understanding of ordinary differential equations (ODEs)
  • Familiarity with mechanics concepts involving constants like mass (m) and angular frequency (w)
  • Knowledge of separation of variables technique in differential equations
  • Basic algebraic manipulation skills
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  • Learn about solving separable differential equations
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  • Investigate the implications of constants in differential equations
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Students in mechanics and differential equations courses, educators teaching ODEs, and anyone looking to deepen their understanding of solving ODEs in physics contexts.

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Homework Statement


A point in a mechanics problem where I have to solve the ODE (dS/dx)^2 + mw^2x^2 = a

where m,w^2 are constants


Homework Equations





The Attempt at a Solution



Hi everyone,
We haven't actually covered how to solve these in my ODEs class yet (obviously my mechanics lecturer doesn't know this!). Please could someone point me in the right direction as to how to start it?
Thanks for any help!
 
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Write the equation as (dS/dx)2 = a - mw2x, and then take the square root of both sides. Don't forget to include +/- on the right side.

Now you have two separable differential equations (one for +, one for -).
 

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