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By sroman on Thu, 11/04/2010 - 14:34

wouldn't r be 16cm or.16m since 32cm is the diameter?

By Mr. Dychko on Fri, 11/05/2010 - 18:43

Thank you for noticing this mistake! I've updated the video to use half the diameter for r (which makes 0.16m).

By dorfte on Wed, 10/10/2012 - 10:29

would you please show where the rev went in the algebra? If I do dimensional analysis:
(.75 rev/sec)(2pir/1rev) the rev cancel out but I feel like I am missing a concept