Planet Gear Train: Find RPM of Gear 4 w/o Carrier

AI Thread Summary
The discussion focuses on calculating the RPM of gear 4 in a planetary gear train without considering the carrier speed. Participants express confusion over why the carrier's speed is excluded from the calculations, especially since it lies between gears 4 and 6. The lack of a visual representation complicates understanding the problem further. The need for clarity on the relationship between the gears and the carrier's role in the RPM calculations is emphasized. Overall, the conversation highlights the complexities of analyzing planetary gear systems.
Latios1314
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Guys, I've just come across this question regarding planetary gear train.

I was asked to find the rpm of a gear within the train. but the solution given doesn't include the carrier speed within the calculations. I was asked to find the rpms to gear 4. The carrier is between 4 and 6.

What are the reasons that it is so?

Sorry that I couldn't show you guys the picture.
 
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