A bottle opener is a simple lever. It intensifies the force with which we remove the crown cap of a bottle. Levers are mostly rigid, rod-shaped objects that have a fulcrum at one place. The longer the arm of the lever, the lesser the force required to do the work. The law of physics ‘Work = Force x Distance’ is applicable here too. The bottle opener is a one-sided lever. The longer the arm of the bottle opener, the easier it is to open it. Other examples of levers are pliers, scissors, crowbars, wrenches, paper punchers, and door handles.
