Second-Class Lever
In second class lever pivot is at one end and the force is applied on the other end.
- The load is situated in the middle of these two.
- The order of this would be pivot-load-force.
Examples of Second Class Lever
The examples of second lever are discussed below:
Wheelbarrow: A wheelbarrow is a second-class lever where the load is placed between the pivot (fulcrum) and the force (handles), allowing for easier lifting of heavy loads.
Nutcracker: In a nutcracker, the nut serves as the fulcrum, the force is applied at one end by squeezing the handles together, and the resistance is the shell of the nut, which breaks due to the applied force.
Bottle Opener: When opening a bottle using a bottle opener, the fulcrum is the edge of the bottle cap, the force is applied at one end of the opener, and the resistance is provided by the cap, which is lifted off.
Door: A door can also be considered a second-class lever, where the hinges act as the fulcrum, the force is applied at the edge of the door handle, and the resistance is encountered at the point where the latch or the door’s weight resists opening.
Types of Lever
Levers are the simple machine devices, designed to do tasks with minimum effort. A lever improves an input force to produce a higher output force, resulting in leverage. Machines were created and made by humans to reduce human effort. A simple machines is a device that change the direction or magnitude of a force and make the work easier. There are numerous sorts of levers based on the position of the a pivot, force, and weight. Levers help us move things with less effort. By changing the direction or size of the force we apply, they make difficult tasks possible. They’re also used to gain speed or distance in movement.
In this article, we will learn in detail about types of levers along with their example. We will also learn what is lever and how they are classified using mechanical advantage.