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प्रश्न
The following are an example of levers. State the class of lever to which each one belongs giving the relative positions of Load (L), Effort (E), Fulcrum (F):
(i) Scissors (ii) Sugar tongs (iii) Nutcracker (iv) Pliers.
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उत्तर
| Name of Lever | Lever Class | Fulcrum | Position of Effort | Load | ||
| (i) | Scissors | First | At centre | One end | Other end | |
| (ii) | Sugar tongs | Third | One end | At centre | Other end | |
| (iii) | Nutcracker | Second | One end | Other end | At centre | |
| (iv) | Pliers | First | At centre | One end | Other end | |
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संबंधित प्रश्न
Which class of lever will always have MA > 1 and why?
The diagram below shows a lever in use:
- To which class of levers does it belong?
- Without changing the dimensions of the lever, if the load is shifted towards the fulcrum what happens to the mechanical advantage of the lever?
Write down a relation expressing the mechanical advantage of a lever.
The lever for which the mechanical advantage is less than 1 has :
The following belong to which class of lever?
Rowing of a boat
The following belong to which class of lever?
Wheelbarrow
Draw a labelled sketch of a second class lever. Give one example of such a lever.
In the following diagram of a wheelbarrow, mark the fulcrum (F) and indicate the directions of load (L) and effort (E) with arrows.
What class of lever is it? Give one more example of the same class of lever.
The diagram below shows a lever in use.
(i) To which class of lever does it belong?
(ii) If FA = 40 cm, AB = 60 cm, then find the mechanical advantage of the lever.
The diagram shows the use of a lever.
- State the principle of moments as applied to the above lever.
- Which class of lever is this? Give an example of this class of lever.
- If FA = 100 cm, AB = 90 cm, calculate the minimum effort required to lift the load.
