Question

A bicyclist is moving in a straight path. Find the angle between the axis of rotation of the two wheels.

• A. $0^o$
• B. ${30}^o$
• C. ${45}^o$
• D. ${90}^o$

Answer 1

The correct option is A $0^o$

Different planes corresponding to the bicycle movement
are depicted as follows:

Axis of rotation is the axis about which an object is rotating.

The wheel of cycle rotates about an axis perpendicular to the plane of rotation of wheel, passing through the center of the wheel.

When a bicycle moves in a straight path, both the wheels lie in a single plane, as shown in the figure.

Hence, both wheels' axis of rotation will be perpendicular to the same plane, and hence they will be in same direction, i.e., the angle between them is $0^o.$