Question

With which class of levers is it possible to increase the force that must be applied?(1 point)
Responses

Class 1 and 2
Class 1 and 2

Class 1 and 3
Class 1 and 3

Class 3 and 4
Class 3 and 4

Class 2 and 3

Answer 1

Class 1 and 2.

Explanation: Class 2 levers (load between fulcrum and effort) always give a mechanical advantage >1, so they amplify force. Class 1 levers (fulcrum between effort and load) can amplify force if the fulcrum is placed close to the load. Class 3 levers always have mechanical disadvantage (they increase distance/speed, not force).