Leversystem prevalent in human arm is: ____________?
Correct answer: C. Class 3
- A. Class 1
- B. Class 2
- C. Class 3
- D. None of These
Explanation
The human arm commonly acts as a third-class lever: the elbow joint is the fulcrum, the biceps applies effort between the fulcrum and the load in the hand. This arrangement favours speed and range of movement rather than force advantage.
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