(a) By directly examining sprockets and counting their numbers of teeth,determine the velocity ratio between the (input) pedal crank andthe (output) rear wheel for your multiple-speed bicycle, a friend’s,or a family member’s. Make a table to show how the velocity ratiochanges depending on which sprocket is selected in the front andback of the chain drive. Tabulate the velocity ratio for each speedsetting.
(b) For a bicycle speed of 15 mph, determine the rotational speeds of thesprockets and the speed of the chain for one of the chain drive’s speedsettings. Show in your calculations how the units of the various termsare converted to obtain a dimensionally consistent result.
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