Question

Which one of the following is a Class III lever? (E-effort, F-fulcrum and L-load)

• A. E - Effort, F - Fulcrum, L - Load
• B. E - Effort, F - Fulcrum, L - Load
• C. E - Effort, F - Fulcrum, L - Load
• D. E - Effort, F - Fulcrum, L - Load

Answer 1

The correct option is D

E - Effort, F - Fulcrum, L - Load

Depending upon the relative positions of the effort, load and fulcrum, levers are classified into 3 types.

(1) Class I levers - Fulcrum is in between load and effort.

(2) Class II levers - Load is in between fulcrum and effort.

(3) Class III levers - Effort is in between fulcrum and load.