Question

Classify the following as levers of the first, second, and third-order.

(a) Forceps

(b) Lock and key

(c) Pliers

(d) A fishing rod

(e) A nut cracker

(f) See-saw

Answer 1

1. Levers of the first order: In this type of lever, the fulcrum is between the load and the effort.
2. See-saws, Pliers, Lock, and keys are examples of levers of the first order because the fulcrum is between the load and the effort.
3. Levers of the second order: In this type of lever, the load is situated between the effort and the fulcrum.
4. A nutcracker is an example of a lever of second order because the load is situated between the effort and the fulcrum.
5. Levers of the second order: In this type of lever, the effort is situated between the load and the fulcrum.
6. Forceps and A fishing rod are examples of levers of third-order because the effort is situated between the load and the fulcrum.