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प्रश्न
What is the use of the lever if its mechanical advantage is
- more than 1,
- equal to 1, and
- less than 1?
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उत्तर
- When the mechanical advantage is greater than 1, the lever serves as a force multiplier, enabling us to overcome a sizeable resistive force with a small effort.
- When the mechanical advantage is equal to 1, the lever is applied in a physical balance with equal lengths of both arms.
- When the mechanical advantage is less than 1, the levers are used to obtain the gain in speed. This implies that the load-displacement is greater than the displacement of effort.
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संबंधित प्रश्न
Describe three orders of levers giving an example of each. Draw neat diagrams showing the positions of fulcrum, load, and effort in each kind of lever.
What do you mean by the mechanical advantage of a lever?
Name the class to which the following lever belong:
a lemon squeezer
Name the class to which the following lever belong:
a wheelbarrow
Name the class to which the following lever belong:
a see-saw
Draw diagram to illustrate the position of fulcrum, load, and effort, of the following:
a see-saw.
Name the machine to which the following belong:
Beam balance
Answer the following.
What is a Class I lever?
Answer the following in a word or two or in a sentence.
Give one example of a machine used to multiply speed.
Explain why the mechanical advantage of the class III type of lever is always less than 1.
