Question

Differentiate between the following.
1. Class I lever and class II lever
2. Class Il lever and class III lever
3. Class I lever and class III lever
4. Fixed pulley and movable pulley​

Answer 1

Answer:

There are three types or classes of levers, according to where the load and effort are located with respect to the fulcrum. Class 1 has the fulcrum placed between the effort and load, Class 2 has the load in-between the effort and the fulcrum, and Class 3 has the effort between the load and the fulcrum.

Answer 2

Answer:

1. In class 1 lever fulcrum is between load and effort .

in class 2 lever load is between fulcrum and effort.

2. In class 2 lever load is between fulcrum and effort.

In class 3 lever effort is between load and fulcrum.

3. In class 1 lever fulcrum is between load and effort.

In class 3 lever effort is between load and fulcrum.

4. Fixed pulley is fixed to a rigid support.

Movable pulley is not fixed to a rigid support.

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