Question Detail
Question
A bicycle wheel with a radius of 33 cm rotates at 40 rpm. What is its angular velocity in rad/s?
Correct Answer
Option B is the correct answer.
Detailed Explanation
First, convert 40 rpm to rev/s: 40/60 = 2/3 rev/s. Then multiply by 2π rad/rev: ω = (2/3 rev/s) * 2π rad/rev = (4π)/3 rad/s ≈ 4.19 rad/s.
Hint
Convert revolutions per minute to revolutions per second first. Then, use the relationship between revolutions and radians.