The blade of a pencil sharpener is a wedge.
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A sharpener is a type of wedge, which is a simple machine that has a sloping surface that helps to reduce the force needed to push objects apart.
A simple machine.
The force applied to a simple machine is called the input force or effort force. It is the force that is exerted by a person or machine to operate the simple machine.
A knife is classified as a simple machine because it has only one function or movement, which is to cut or slice through objects. It utilizes a straight blade for this purpose, making it an example of a simple machine known as a wedge.
A wedge is a simple machine. A bike is not considered a simple machine because it is composed of many complex systems working together to enable motion.
No, a baseball is not a simple machine. Simple machines are mechanical devices used to make work easier, such as levers or pulleys, whereas a baseball is a sports equipment used in the game of baseball.