First second and third class simple machines?

Simple machines are tools that make work easier by altering the direction or magnitude of a force. The first class consists of levers, where the fulcrum is between the effort and the load (e.g., a seesaw). The second class has the load between the effort and the fulcrum (e.g., a wheelbarrow), while the third class features the effort between the load and the fulcrum (e.g., a pair of tweezers). Each class utilizes different arrangements to optimize mechanical advantage.