How fast is a point at the top of the tire moving?

Question

A typical road bike wheel has a diameter of 70 cm including the tire. A) In a time trial, when a cyclist is racing along at 12 m/s how fast is a point at the top of the tire moving? B) How fast, in rpm, are the wheels spinning?

Kale Eichmann · Accepted Answer

Part A. The velocity for a point on the top of a tire would be 2V (2*12m/s)=24m/sPart B. is just converting 12m/s into rad/s. Angular velocity = V/r ((12m/s)/0.35m)=34.2857 rad/s. Now convert into revolutions by dividing by 2pi to get revs per second, and multiply by 60 seconds to get 327.4 rpm.

Kale Eichmann · Answer

hey mastering physics gamers, the correct answers are A) 24 m/sB) 330 rpm

Kale Eichmann · Answer

A) The point at the top of he tire will also cover 12 m/s in a circular route. B) rpm of wheels = angular velocity in rad/s x (1 revolutions / 2π) in rev/s x (60 s / 1 min) rpm of wheels = (v/r) x (1/2π) x (60)rpm of wheels = (12 m/s)/(0.35 m) x (1/2π) x (60) = 327.4 rpm

Kale Eichmann · Answer

A) In a time trial, when a cyclist is racing along at 12 m/s how fast (Vt) is a point at the top of the tire moving? Vt= 12 m/sec B) How fast, in rpm, are the wheels spinning?ω = Vt/r = 12/0.35 rad/sec = 2*PI*n/60 n = 12*60/(0.7*PI) = 1028.57/PI rpm ( ≅ 327.40 )

Kale Eichmann · Answer

12 m/s and 327.4 Rpm

Dr. Juanita Wolff

How fast is a point at the top of the tire moving?

5 Answers

AI-Powered Insights

Want to answer this question?

Categories

Tags

Related Questions