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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
Give one example of a class I lever where the mechanical advantage is more than 1.
Name the class to which the following lever belong:
a wheelbarrow
Name the machine to which the following belong:
Sugar tongs
Answer the following.
Name the simplest of all types of machines.
Tick the most appropriate answer.
A pair of scissors is an example of a/an
Name the three classes of levers and state how are they distinguished. Give two examples of each class.
Class III levers have mechanical advantage less than one. Why are they then used?
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 |
Differentiate Class I lever and Class II lever.
Classify the following into levers:
Sugar tongs
