Centripetal Acceleration (Problem 20)

At takeoff, a commercial jet has a 60.0 m/s speed. Its tires have a diameter of 0.850 m. (a) At how many rev/min are the tires rotating? (b) What is the centripetal acceleration at the edge of the tire? (c) With what force must a determined $1.00\times {10}^{-15}\text{kg}$ bacterium cling to the rim?(d) Take the ratio of this force to the bacterium’s weight. Select the answer to part (a).