Tristan rides again, this time in the annual Lake Placid Iron Boy event
Tristan rides his bike in the annual Iron Boy event in Lake Placid, New York. Due to mechanical difficulties, he cannot shift gears, but perseveres, nonetheless.
The center of his pedal is 9 inches from the axis of rotation of the front sprocket. The radius of the front sprocket is 5 inches. The radius of the rear sprocket is 3 inches. The radius of the rear tire is 12 inches.
Tristan is pedaling furiously at 40 RPM and mostly keeping up with the pack.
Find Tristan’s speed in MPH.
A correct answer sent to [email protected] might win a Tucker’s gift card.
Last week’s winner was Ben Chacon with Angle ≈ 12 degrees.
(Use of AI to solve this problem is strictly prohibited.)
Jeff Smith is a former Math teacher and a retired US Navy Lieutenant Commander. Reach him at [email protected].
