Question
4. The wheels on Devon’s bike have r-inch radii. After the front wheel picks up a tack, Devon rolls another d feet and stops. How far above the ground is the tack?
Then,(Continuation) How many degrees does the wheel turn for each foot that it rolls?
Then,(Continuation) How many degrees does the wheel turn for each foot that it rolls?
Answers
bobpursley
the angle he rolls is r/2PIr (in radians)
is 180/pi * r/2PIr in degrees
How high? What is r(1- cos theta?)
is 180/pi * r/2PIr in degrees
How high? What is r(1- cos theta?)