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A gearbox has 21 gear teeth on incoming gear, 42 gear teeths on outgoing cogwheel and 90% thermal efficiency. The gearbox is driven at 3000 rpm and the input power is 1kW. What is the outgoing rpm?

 

 

(I've translated this from swedish to english so i hope it's not confusing)

 Jun 3, 2018
 #1
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Guys please im freaking out

 Jun 3, 2018

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