What is a wedge? Give two examples.

A wedge is a simple machine that consists of a triangular-shaped object with a thick end and a thin end. It is typically used to separate, lift, or hold objects by applying force to the thick end, causing the thin end to exert a greater force in the opposite direction. The following are two examples of wedges:

Axe: An axe is a common example of a wedge. It has a sharp, triangular blade that is thick at the top and tapers to a thin edge. When force is applied to the thick end by swinging the axe, the thin edge concentrates that force, enabling it to cut through objects like wood.

Doorstop: A doorstop is another example of a wedge. It is a small triangular-shaped object typically made of rubber, plastic, or metal. When the thick end of the doorstop is placed under a door, it prevents the door from closing by exerting a force in the opposite direction. The thin end of the wedge wedges itself between the floor and the bottom of the door, effectively holding it open.