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प्रश्न
What is a first-order lever?
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उत्तर
When the fulcrum is between the effort and the load,
it is known as the Class I lever.
Example: scissors, pliers, seesaw.
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संबंधित प्रश्न
What is a lever?
Give one example of a class I lever where mechanical advantage is more than one ?
Which class of lever found in the human body is being used by a boy when he holds a load on the palm of his hand.
The following belong to which class of lever?
Human-arm
The following belong to which class of lever?
Rowing of a boat
The following belong to which class of lever?
Sugar tongs
The following are an example of levers. State the class of lever to which each one belongs giving the relative positions of Load (L), Effort (E), Fulcrum (F):
(i) Scissors (ii) Sugar tongs (iii) Nutcracker (iv) Pliers.
The diagram below shows a lever in use.
(i) To which class of lever does it belong?
(ii) If FA = 40 cm, AB = 60 cm, then find the mechanical advantage of the lever.
What is a lever?
The length of a nut-cracker is 12 cm. A nut, when kept at a distance of 4 cm from its fulcrum, requires an effort of 100 gf to crack it. What force will be required to crack the nut without using the nut-cracker?
