HUMAN NUTRITION

Detailed explanation-1: -By positioning the fulcrum close to a heavy object and applying an effort from far away, levers can be used to lift enormous loads with ease (refer to Figure 1). The object being moved by the lever is often called the load, or output force, while the force applied to the lever is called the effort, or input force.

Detailed explanation-2: -The forklift truck is used to move pallets, heavy goods and materials. Due to its sturdy composition, size and weight it can lift, forklifts are used in warehouses, factories, industrial units and construction sites.

Detailed explanation-3: -Class 1 levers include items such as a seesaw, pliers, a barbell, and scissors. In all 3 of these, the fulcrum (pivot point) is located in the middle of the system. These levers magnify the input force allowing for an increase in mechanical advantage done by the lever.