Wheelbarrows, nail clippers, nutcracker, stapler, can opener, etc.
lock and key is the lever of second type
Type III Lever
second class lever
A bottle opener is a second-class lever
SECOND CLASS
A second-order lever is a type of lever where the load is situated between the effort (applied force) and the fulcrum. This arrangement increases the mechanical advantage of the lever, allowing the input force to exert greater output force to move the load. Examples of second-order levers include a wheelbarrow and a bottle opener.
The second class lever was not specifically "invented" by a single individual. It is a type of lever identified by the relative positions of the effort, fulcrum, and load. Examples include wheelbarrows and nutcrackers. The concept of levers has been recognized since ancient times.
The type of lever arrangement you're describing is a second-class lever. In second-class levers, the load is placed between the fulcrum and the effort, allowing for mechanical advantage in lifting heavy objects with less force. Examples include a wheelbarrow or a bottle opener.
A second-class lever is a type of simple machine where the load is situated between the fulcrum and the effort. The force applied to move the load is greater than the load itself, providing mechanical advantage. Examples include a wheelbarrow or a nutcracker.
The mechanical advantage of a second class lever is always greater than 1. This type of lever has the load situated between the fulcrum and the effort, resulting in increased force output compared to the input force applied. Examples of second class levers include wheelbarrows and bottle openers.
Its a second class lever, because your legs are behind your toes.
A second-class lever. In this type of lever, the output force is always smaller than the input force, but the trade-off is that the output force moves a greater distance than the input force. Examples of second-class levers include wheelbarrows and nutcrackers.