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प्रश्न
What is a lever?
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उत्तर
A lever is a simple rigid bar that is free to move around a point called the fulcrum.
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संबंधित प्रश्न
State whether the following statement is True or False.
All levers are force multipliers.
Name the class to which the following lever belong:
a lemon squeezer
Name the class to which the following lever belong:
an oar rowing a boat.
How can you increase the mechanical advantage of a lever?
State three differences between the three classes of levers.
Answer the following.
State the principle of levers.
Both a pair of scissors and a pair of pliers belong to the same class of levers. Name the class of lever. Which one has the mechanical advantage less than 1?
The diagram below shows a rod lifting a stone.
- Mark position of fulcrum F and draw arrows to show the directions of load L and effort E.
- What class of lever is the rod?
- Give one more example of the same class of lever stated in part (b).
Classify the things below.
| Sl. No | Examples | Class of Lever |
| 1. | Spade | |
| 2. | Seesaw | |
| 3. | Wheel barrow | |
| 4. | Plier | |
| 5. | Nail cutter |
second-order lever ______.
