Since each rolling wheel of a railroad train is tapered,the narrow part of the wheel has a tangential speed that is
A)greater than that of the wide part.
B)smaller than that of the wide part.
C)the same as that of the wide part.

Question

Quizplus · Accepted Answer

The tangential speed of a point on a wheel is directly proportional to the radius of that point from the center of the wheel. Since the narrow part of the wheel has a smaller radius than the wide part, its tangential speed will be smaller than that of the wide part.

Since Each Rolling Wheel of a Railroad Train Is Tapered,the