Transcription of An angular/linear speed bicycle example
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An angular/linear speed bicycle example
An angular/linear speed bicycle exampleOn October 1, 2003, Leontien Zijlaand-van Moorsel set a new women s hour record byriding a bicycle km in one hour on the velodrome at rode afixed gearbike which was qualitatively like this one:radius 34cmrear sprocket14 teethradius 3cmfront sprocket54 teethrear wheelA fixed gear means that there is no freewheel: the rear sprocket isattached directly to therear wheel , so that if the wheel turns, the rear sprocket (and hencethe front sprocket andpedals) turns. You can t coast on such a bike. These kinds of bikes are standard in trackracing. They also have no brakes, to make it difficult to make sudden speed changes. Thisimprovessafety in the close quarters of track is the question:If Leontien rode at a constant speed , how fast did she pedal?Thatis, how quickly must her pedals (and feet) have been going around?In cycling, this rate isknown as s the idea: if we know how fast the wheels turn, then we ll knowhow fast the rearsprocket turns, then we ll know how fast the chain moves, then we ll know how fast the frontsprocket turns, then we ll know how fast the pedals wheel , sprocket, gear, etc.
rear wheel, so that if the wheel turns, the rear sprocket (and hence the front sprocket and pedals) turns. You can’t ”coast” on such a bike. These kinds of bikes are standard in track racing. They also have no brakes, to make it difficult to make sudden speed changes. This improves safety in the close quarters of track racing.
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