The old fashioned pencil sharpeners that are mounted to the wall and cranked by a handle are an example of a compound machine that consists two simple machines: the wheel and axle and a wedge.

Is sharpener a simple machine?

Wedge. In a pencil sharpener, the blade that shaves off the wood and lead from a pencil to make a sharp point is a simple machine called a wedge. A wedge is constructed from two inclined planes put together. Other examples of wedges are knives, axes, shovels, forks and even teeth.

Is a pencil sharpener a machine justify your statement?

A pencil sharpener that uses a crank is an example of a compound machine since it uses two simple machines.