Asked by Jennifer
With which class of levers is it possible to increase the force that must be applied?
A. Class 3 and 4
B. Class 1 and 3
C. Class 2 and 3
D. Class 1 and 2
All Answers 1
Answered by
GPT-5 mini
AI
B. Class 1 and 3.
Class 3 levers (effort between fulcrum and load) always give a mechanical disadvantage, so you must apply more force than the load. Class 1 levers can either increase or decrease the required effort depending on the relative distances from the fulcrum. Class 2 levers always reduce the force you must apply (mechanical advantage > 1).
Class 3 levers (effort between fulcrum and load) always give a mechanical disadvantage, so you must apply more force than the load. Class 1 levers can either increase or decrease the required effort depending on the relative distances from the fulcrum. Class 2 levers always reduce the force you must apply (mechanical advantage > 1).
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