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प्रश्न
Answer the following in short.
Using a suitable example, describe how a machine acts as a force multiplier.
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उत्तर
It is very difficult to open the sealed metal cap of a cold drink bottle with our bare hands. A simple machine like a bottle opener (Class II lever) multiplies the applied force and much less effort is required to open the cap. Hence, it acts as a force multiplier.
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संबंधित प्रश्न
What is a lever?
Which class of lever has the mechanical advantage always more than 1? Give an example.
Give one example of a class I lever in a case where the mechanical advantage is equal to 1?
Draw diagram to illustrate the position of fulcrum, load, and effort, of the following:
a see-saw.
Draw diagram to illustrate the position of fulcrum, load, and effort, of the following:
a beam balance
Tick the most appropriate answer.
Which of the following is a Class II lever?
Explain why the mechanical advantage of the class III type of lever is always less than 1.
Classify the following into levers:
A door
Lemon juicer belongs to which type of lever? Why?
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 |
