The tapered shape of the wheel rims that ride on railroad tracks allows opposite wheels to
A)in effect, vary their diameters.
B)travel at different linear speeds for the same rotational speed.
C)both of these
D)none of these

Question

Quizplus · Accepted Answer

The tapered shape of the wheel rims on railroad tracks allows opposite wheels to vary their diameters, which in turn allows them to travel at different linear speeds for the same rotational speed. This is important for trains to be able to navigate curves without derailing.

The Tapered Shape of the Wheel Rims That Ride on Railroad