Keeping the fulcrum the place where the rod pivots (or rotates) in the same place and changing the length of the lever a long arm that rests on a support called a fulcrum can also impact the effectiveness of the lever a long arm that rests on a support called a fulcrum . The longer the lever a long arm that rests on a support called a fulcrum , the less effort will be needed to lift the load the weight of an object . As the Greek philosopher Archimedes once said, ‘Give me a lever a long arm that rests on a support called a fulcrum long enough and a fulcrum the place where the rod pivots (or rotates) on which to place it, and I shall move the world’.