Regulation of food and dietary supplements by the U.S. Food and Drug Administration whether it is to be regulated as a food or as a drug, based on the claims that the manufacturer or seller makes about its properties. The FDA is authorized to issue a standard of identity for any food. This is a description of what, exactly, must be in that food in order for it to be identified under a certain name. For example, a court has upheld an FDA ruling that for a product to be sold as cream cheese, it must contain a specified minimum percentage of milk fat, and a maximum level of moisture. Incorrectly identifying a
Wheel and axle with a drive force applied tangentially to the perimeter of the wheel and a load force applied to the axle, respectively, that are balanced around the hinge which is the fulcrum. The mechanical advantage of the wheel and axle is the ratio of the distances from the fulcrum to the applied loads, or what is the same thing the ratio of the diameter of the wheel and axle. A major application is in wheeled vehicles, in which the wheel and axle are used to reduce friction of the moving vehicle with the ground. Other examples of devices which use the