State the class of levers and the relative positions of load (L), effort (E) and fulcrum (F) in

(a) a bottle opener, and

(b) sugar tongs.

Solutions:

(a) A bottle opener is a Class II lever because the fulcrum F and the effort E are at opposite ends of the lever, and the load is in the middle.

(b) Sugar tongs is a Class III lever because the fulcrum F and the load L are at opposite ends of the lever and the effort E is in the middle.