Final answer:
A weight used in weight training that is not attached to an apparatus is described as a free weight.
Step-by-step explanation:
When lifting a free weight, the force of gravity pulls down on the weight, creating a downward force we call the weight of the object. This force must be counteracted by a lifting force exerted by the person training, otherwise the weight would fall due to gravity.
An inanimate object, like a table, would support the weight placed on it through normal force, which is the force perpendicular to the surface of contact that prevents the weight from falling through. This force is equal and opposite to the weight of the object, allowing the object to remain stationary on the table surface.