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प्रश्न
Name the class to which the following lever belong:
a crowbar
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उत्तर
a crowbar: Class I lever.
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संबंधित प्रश्न
What do you mean by the mechanical advantage of a lever?
Give one example of a class I lever in a case where the mechanical advantage is equal to 1?
State three differences between the three classes of levers.
Answer the following.
Name the simplest of all types of machines.
Answer the following.
What is a Class I lever?
Answer the following in a word or two or in a sentence.
Which type of machine is used to squeeze a lemon?
Answer the following in short.
Using a suitable example, describe how a machine acts as a force multiplier.
Explain why the mechanical advantage of a class II of lever is always more 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).
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 |
