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Question

Human Forearm is an example of:


A

Class III lever

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B

Class II Lever

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C

Class I lever

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D

None of the above

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Solution

The correct option is A

Class III lever


Class III levers are the levers in which the fulcrum is at one end and the force is applied in the middle and the weight is on the other end. The order is represented as a weight-force-fulcrum. In this case, we have to apply more energy to displace the weight to a longer distance.

Example:

  • Fishing rod
  • A broom
  • A baseball bat
  • A bow and arrow
  • Human jaw

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