39. NCERT Exemplar XIX

The motion of a wheel of a moving bicycle and the blade of a moving electric fan are in circularrectilinearperiodic motion. But the bicycle wheels rotatebicycle wheels does not rotatebicycle rotate on the ground and never movesdoes not move the bicycle forwardmoves the bicycle forward. Hence, the motion of a wheel of a moving bicycle are in circularrectilinearcircular and rectilinear motion.