Question
Download Solution PDFIdentify which of the below is not a Class 3 lever.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFThe correct answer is Wheelbarrow.
Key Points
- A wheelbarrow is an illustration of a second-class lever since the load is positioned between the fulcrum and the effort, making it a second-class lever.
- Levers allow you to exert a lot of force over a small area on one end while exerting little force over a larger area on the other.
- The fulcrum and the applied force are at opposite ends in a wheelbarrow. In the center of these two is the weight.
- The load is situated in second-class levers halfway between the effort (force) and the fulcrum.
Important Points
- Third Class Lever:
- Levers with the weight at one end, the fulcrum at the other, and the force applied in the center.
- The arrangement is shown as a weight-force-fulcrum. To move the weight a greater distance in this instance, we must exert more force.
Additional Information
- Because the fulcrum and load are at opposite ends, tweezers are third-class levers.
- The hockey stick is an example of a third-class lever. The fulcrum of a hockey stick holding is the hand that holds the top end of the stick.
- Because the effort is shared by the load and pivot, a stapler is an example of a class three lever.
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