What class of leavers are scissors and pliers?

Scissors and pliers belong to the class of tools known as "levers." Specifically, they are examples of first-class levers, where the fulcrum is positioned between the effort and the load. In both cases, the user's hand applies force (effort) on one end of the tool, while the cutting or gripping action occurs at the other end. This lever principle allows for greater mechanical advantage, making tasks easier.