(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Im am attempting to solve very difficult kinematics for a problem in my Dynamics course, and after what I got for the velocity of the particle, I come accros the problem that i cant diferentiate one part.

Essentially I have to get the time derivative of r([tex]\dot{\theta}[/tex]+[tex]\Omega[/tex])cos[tex]\phi[/tex]

where r, [tex]\phi[/tex], AND [tex]\theta[/tex] are variables and [tex]\Omega[/tex] is the only constant

2. Relevant equations

3. The attempt at a solution

I believe if I can figure this out I can go on with the problem, I may have well made a mistake in my assumptions early on which would make me not run in to this problem, but I cant figure out another way to do it. Is it even possible?

product rule twice was the only thing I could see plausible but even then I wouldnt know how to implement it.

Thanks

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# Homework Help: Time derivative with three variables

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