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प्रश्न
What is the use of the lever if its mechanical advantage is
- more than 1,
- equal to 1, and
- less than 1?
थोडक्यात उत्तर
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उत्तर
- When the mechanical advantage is greater than 1, the lever serves as a force multiplier, enabling us to overcome a sizeable resistive force with a small effort.
- When the mechanical advantage is equal to 1, the lever is applied in a physical balance with equal lengths of both arms.
- When the mechanical advantage is less than 1, the levers are used to obtain the gain in speed. This implies that the load-displacement is greater than the displacement of effort.
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संबंधित प्रश्न
Name the class to which the following lever belong:
a nutcracker
Name the class to which the following lever belong:
a crowbar
Draw diagram to illustrate the position of fulcrum, load, and effort, of the following:
a nutcracker
Name the machine to which the following belong:
Beam balance
Answer the following in a word or two or in a sentence.
Give one example of a machine used to multiply speed.
Answer the following in short.
Using a suitable example, describe how a machine acts as a force multiplier.
Draw a labelled diagram of a class II lever. Give one example of such a lever.
Classify the following into levers:
A catapult
Classify the things below.
| Sl. No | Examples | Class of Lever |
| 1. | Spade | |
| 2. | Seesaw | |
| 3. | Wheel barrow | |
| 4. | Plier | |
| 5. | Nail cutter |
Match the following:
| 1. | Class I lever | a. | Wheelbarrow |
| 2. | Class II lever | b. | Seesaw |
| 3. | Class III lever | c. | Axe |
| 4. | Wedge | d. | Hockey sick |
