Beating metal, breaking rock, driving nails, hammering, etc..
A hammer is a tool with few or no moving parts. It consists of a handle and a head, with no internal mechanisms that require movement to function.
A block of wood that a hammer rests on is typically called a hammer block or a hammer rest. It is used to support the hammer in a stable position when not in use.
The input force of a hammer is the force applied by the person swinging or striking with the hammer. It is the force exerted on the hammer handle by the person's hand or arm to drive the hammer head onto the target.
In a hammer, heat energy is transferred through conduction. When the hammer strikes an object, some of the kinetic energy from the hammer's movement is converted to heat due to friction between the hammer and the object. This heat is then transferred through the hammer's material via conduction.
A typical hammer weighs between 16 to 20 ounces, depending on the size and type of hammer.