Ejjman
01-15-2010, 03:29 AM
This time, I included a picture, with the accurate measurements!
http://img25.imageshack.us/img25/8667/wheelmw.jpg
I wanted to make this as good to understand for Yohojo, so I made a remake.
http://img192.imageshack.us/img192/4456/actuaalnes.png
And finally, in words.
The sprockets and chain of a bicycle are shown in the figure. The pedal sprocket has a radius of 4 in., the wheel sprocket a radius of 2 in., and the wheel a radius of 13 in. The cyclist pedals at 40 rpm.
a) Find the angular speed of the wheel sprocket.
b) Find the speed of the bicycle. (Assume that the wheel turns at the same rate as the wheel sprocket.)
Thanks, :D
EDIT: Explanation also, if possible. I need to explain to my people.
http://img25.imageshack.us/img25/8667/wheelmw.jpg
I wanted to make this as good to understand for Yohojo, so I made a remake.
http://img192.imageshack.us/img192/4456/actuaalnes.png
And finally, in words.
The sprockets and chain of a bicycle are shown in the figure. The pedal sprocket has a radius of 4 in., the wheel sprocket a radius of 2 in., and the wheel a radius of 13 in. The cyclist pedals at 40 rpm.
a) Find the angular speed of the wheel sprocket.
b) Find the speed of the bicycle. (Assume that the wheel turns at the same rate as the wheel sprocket.)
Thanks, :D
EDIT: Explanation also, if possible. I need to explain to my people.