Reply
Sun 17 Jul, 2005 08:16 pm
The radii of the sprocket assemblies and the wheel of the bicycle are 4 inches, 2 inches, and 13 inches, respectively. If the cyclist is pedaling at the rate of one revolution per second, find the speed of the bicycle in
a) feet per second and
b) miles per hour.
Which sprocket is attached to the pedals and which is attached to the wheel?
If the pedal makes one revolution, so does the sprocket it is attached to. The number of revolutions of the rear sprocket will be:
'front radius' / 'rear radius'
Since they are attached, the rear wheel will make the same number of revolutions as the rear sprocket.
Use the circumference of the wheel to compute distance traveled.
A handy conversion 88 ft/s=60mi/hr
Rap
ok
Thanks for the handy conversion.
Stumble It!
Tweet This
Bookmark on Delicious
Share on Facebook
Share on MySpace