This walking toy, for example, has cam mechanisms attached to the legs, that help it walk. Remember, cam mechanisms help convert circular motion into reciprocating motion. Back to top ...

With rack and pinion steering, the rotation of the pinion causes linear motion of the rack, which turns the vehicle's wheels left or right. Rack and pinion systems are a common component in railways.

Resource scarcity and preservation are key reasons for the shift he says, which means recycling is a critical component of the circular economy. Tulleners, speaking at a seminar at EcoExpo Asia 2014 ...