Find out more about the wheel and axel, the lever, and the wedge. Find out more about three of the six simple machines: the wheel and axel, the wedge, the lever. Simple machines like these help us do ...

imple machines help us change the amount of force or the direction of the force needed to move an object. Find out how by learning more about levers. Major Funding by the Laura Moore Cunningham ...

Introduction Before the industrial age people largely had to rely on muscle power to move and lift heavy objects. Simple machines such as pulleys, levers and ramps made it easier for humans to lift ...