Sweeping with a broom, holding the top hand still and driving with the lower hand, makes the broom a lever of which class?

Correct answer to question 68 (Mechanical Comprehension): Third class

Method

The still top hand is the fulcrum, the lower hand in the middle supplies the effort, and the bristles at the end are the load. Effort in the middle makes it third class, giving the head plenty of speed.