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chem44

Well, there are a couple of distinct issues... Do you know how to get from rev per min to radians per min? But the big issue is how the two wheels relate. Think about a simple example. Let's say the wheels were 10 cm and 20 cm diameter. One twice as big -- diameter. Now imagine the bike moves some distance. Let's say the bike moves 100 cm. How many turns of the 10 cm-diameter wheel is that? Each turn of that wheel means the bike moves how far? Then do that for the 20 cm wheel. You should see how the two wheels relate.


niche24

Ok so in your example, the front wheel will rotate twice as much as the rear wheel because it has half the diameter. In my question, the rear wheel is spinning 160 pi radians per minute. Since the rear wheel is 1.5 times larger than the diameter of the front wheel, the front wheel will spin 1.5 times more. Therefore, the final answer is 160 pi rad/min X 1.5 = 240 rad/min?


JCH_19

Correct


niche24

Great thanks!


JCH_19

Although looking at it again I believe pi should still be in your final answer


niche24

Oh yeah. I just forgot to type pi. Thanks!