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प्रश्न
Explain why the mechanical advantage of a class II of lever is always more than 1.
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उत्तर
- With Class II levers, the load L is positioned somewhere between the effort E and the fulcrum F.
- The fulcrum F and the effort E are located at the two ends of the lever.
- As a result, the effort arm is always longer than the load arm, and the load and the effort are on the same side of the fulcrum but moving in different directions.
- Therefore, the mechanical advantage is always greater than 1.
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संबंधित प्रश्न
State whether the following statement is True or False.
All levers are force multipliers.
Which class of lever has the mechanical advantage always more than 1? Give an example.
Draw diagram to illustrate the position of fulcrum, load, and effort, of the following:
a see-saw.
State three differences between the three classes of levers.
Name the machine to which the following belong:
Beam balance
Answer the following.
Name the simplest of all types of machines.
Give one example of a class I lever where mechanical advantage is less than 1.
What is the use of the lever if its mechanical advantage is
- more than 1,
- equal to 1, and
- less than 1?
Class III levers have mechanical advantage less than one. Why are they then used?
Classify the things below.
| Sl. No | Examples | Class of Lever |
| 1. | Spade | |
| 2. | Seesaw | |
| 3. | Wheel barrow | |
| 4. | Plier | |
| 5. | Nail cutter |
