Question

Calculate the velocity of the bottom point of the wheel for perfect rolling using the data: r=20 cm, ω=100 rad/sec.

(a) 20 m/sec

(b) 40 m/sec

(c) 60 m/sec

(d) 80 m/sec

I have been asked this question in an interview for internship.

This interesting question is from Nature of Traction Load in division Traction Drives of Electric Drives

Answer 1

Correct option is (a) 20 m/sec

Explanation: The velocity of the bottom point of the wheel for perfect rolling is the product of the radius and angular velocity. It is expressed in terms of m/sec. V = r×ω = .2×100=20 m/sec.