Question

1. Identify the class of the lever shown in the diagram below.
2. How is it possible to increase the M.A. of the above lever without increasing its length?

Answer 1

1. The lever shown is a third-class lever because the effort (E) lies between the fulcrum (F) and the load (L).
2. The mechanical advantage can be increased without increasing the length of the lever by moving the effort closer to the load, so that the effort arm increases relative to the load arm.