A bicycle rider tries to coast for 300 m to complete one full circuit of a nominally flat oval shaped “track” in an elementary school parking lot on a non-windy day with the air temperature at 20oC. The mass of the rider is 85 kg and the mass of the bike is 12.5 kg. How fast does the initial speed need to be to coast the desired 300 m? Is attaining this speed feasible (i.e., can the rider generate this speed by pedaling on horizontal surface)? Assume: •The rider crouches down a bit to reduce drag (as compared to sitting upright) •The rider cannot maintain balance if the speed gets below 0.1 m/s. •All resistance is due to wind drag

A bicycle rider tries to coast for 300 m to complete one full circuit of a nominally flat oval shaped “track” in an elementary school parking lot on a non-windy day with the air temperature at 20oC. The mass of the rider is 85 kg and the mass of the bike is 12.5 kg. How fast does the initial speed need to be to coast the desired 300 m? Is attaining this speed feasible (i.e., can the rider generate this speed by pedaling on horizontal surface)? Assume: •The rider crouches down a bit to reduce drag (as compared to sitting upright) •The rider cannot maintain balance if the speed gets below 0.1 m/s. •All resistance is due to wind drag

Principles of Heat Transfer (Activate Learning with these NEW titles from Engineering!)

8th Edition

ISBN:9781305387102

Author:Kreith, Frank; Manglik, Raj M.

Publisher:Kreith, Frank; Manglik, Raj M.

Chapter5: Analysis Of Convection Heat Transfer

Section: Chapter Questions

Problem 5.49P

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