A rake is third-class lever. The pivot point, called a fulcrum, is at one end, while the load is on the other end. The force is in between. Shovels, spears, elbows and knees are other examples of third-class levers.
Levers that have the fulcrum between the force and the load are known as first-class levers. Examples include pliers, seesaws and crowbars. Levers that have the fulcrum and the force at opposite ends of the arm with the load in between are second-class levers. These include wheelbarrows, nutcrackers and garlic presses. All levers amplify the input force to release a greater output force. Levers are identified as the earliest simple machines.Learn More
A hammer is a lever, one of the six types of simple machines. A lever is defined as any rigid bar that pivots around a fixed point, called a fulcrum, to apply force.Full Answer >
There are six simple machines, including the lever, the wheel and axle, the inclined plane, the wedge, the screw and the pulley. Together, these six form the basis of all mechanized systems that have ever been built.Full Answer >
A lever is a simple machine that is made up of a board or bar that rests on an object. Levers are used to achieve a mechanical advantage, such as making lifting heavy objects easier.Full Answer >
An output arm is the end of a lever that moves the load up when force is applied to the other end of the lever. The upward force that moves the output arm is the output force.Full Answer >