Where can I find online resources to help with classical mechanics?

AI Thread Summary
Online resources for classical mechanics can be invaluable for students facing challenging coursework. The discussion highlights the importance of using the Lagrangian method to solve problems, particularly in deriving equations of motion for constrained systems. Key steps include expressing the Lagrangian in terms of cylindrical coordinates and substituting constraints appropriately. Participants suggest that finding z as a function of time is a crucial starting point for tackling such problems. Utilizing online tutorials and forums can provide additional guidance and examples to aid understanding.
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Hi!

My classical mechanics course is proving to be quite a challenge. The textbook has not arrived yet, and my professor has already assigned a problem set. For example, one question is

A bead of mass m is constrained to move along a smooth conical spiral. The radius of the spiral ρ = a z and the angle along the spiral φ = - b z where ρ, φ and z are the standard cylindrical coordinates. Find the equation of motion of the bead.

I have no idea where to start because we don't do any examples of worked problems in class, only theory and proofs. Does someone know any good online resources that I can check out?

Thanks
 
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Essentially you can find z as a function of time. The rest are constraints. Write down the Lagrangian in terms of rho, phi and z, then substitute where applicable.
 

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