Question

Give two examples each of levers of first, second, and third-order.

Answer 1

1. First class lever: This is a type of lever which has the fulcrum in between the weight and the force applied. Its order is represented as force-fulcrum-weight.
2. Example: using scissors represents the use of two first-class levers, pulling a nail out of a wooden plank also represents a first-class lever.
3. Second class lever: In this, the fulcrum is at one end and the force applied is on the other end. The weight is situated in the middle of these two. The order of this would be fulcrum-weight-force.
4. Example: wheelbarrow, staplers
5. Third class ever: These 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.
6. Example: fishing rod, a broom