The problem was that the lever arm was too short ... Let’s take a closer look at these super useful, and sometimes hidden mechanisms known as levers. Technically speaking, levers predate ...

Perhaps the simplest example is the lever, that consists ... motion via a four bar mechanism that is formed by the two leg segments, the bicycle frame, and the crank. The joints connecting the ...

A lever is a simple mechanism that uses a bar to pivot around a fixed point called a fulcrum. Levers can be joined together to form linkages. Simple linkages can be used to change the direction of ...