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प्रश्न
State three differences between the three classes of levers.
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उत्तर
| Class I | Class II | Class III | |
| 1. | It has the fulcrum between the load and effort. | It has the load between the fulcrum and effort. | It has an effort between the fulcrum and the load. |
| 2. | The effort arm can be shorter, equal to or longer than the load arm. | The effort arm is bigger than the load arm. | The effort arm is always shorter than the load arm. |
| 3. | The mechanical advantage can be less than, equal to, or greater than 1. | The mechanical advantages are always greater than 1. | The mechanical advantages are always less than 1. |
| 4. | The load and effort are in the same direction. | The load and effort are in opposite directions. | The load and effort are in opposite directions. |
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संबंधित प्रश्न
Name the class to which the following lever belong:
a lemon squeezer
Name the class to which the following lever belong:
a nutcracker
Name the class to which the following levers belong:
a pair of pliers
Name the machine to which the following belong:
Beam balance
A lever of length 100 cm has the effort of 15 kgf at a distance of 40 cm from the fulcrum at one end. What load can be applied at its other end?
Tick the most appropriate answer.
A pair of scissors is an example of a/an
Answer the following in a word or two or in a sentence.
Which type of machine is used to squeeze a lemon?
Give one example of a class I lever where mechanical advantage is less than 1.
Classify the things below.
| Sl. No | Examples | Class of Lever |
| 1. | Spade | |
| 2. | Seesaw | |
| 3. | Wheel barrow | |
| 4. | Plier | |
| 5. | Nail cutter |
Lemon juicer belongs to which type of lever? Why?
