A bicycle is traveling at 11 miles per hour. The bicycle's tires have a radius of 13 inches. What is the rotational speed for either of the tires in radians per minute?
+37146 11 m/hr * 5280 ft / mi * 12 in / ft * 1 hr /60 min = 11616 in/min
Circumference circle = 2 pi r
13 in * 2 * pi = circumference of wheel per revolution
11616 in/m / 26 pi in / rev = 142.21 rev /min
142.21 rev / min * 2pi Radians / rev = 893.54 R/min
