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प्रश्न
Draw a labelled sketch of a second class lever. Give one example of such a lever.
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उत्तर
A labelled diagram of a second class lever is given below. Its example is a nut-cracker.
Second Class Lever
Example of a second class lever (Nut-cracker)
संबंधित प्रश्न
What is a lever?
A man uses a crowbar of length 1.5 m to raise a load of 75 kgf by putting a sharp edge below the bar at a distance 1 m from his hand.
- Draw a diagram of the arrangement showing the fulcrum (F), load (L) and effort (E) with their directions.
- State the kind of lever.
- Calculate:
- load arm,
- effort arm,
- mechanical advantage and
- the effort needed.
Give three examples for leavers of second order.
Give three examples for leavers of the third order.
Which class of lever found in the human body is being used by a boy when he raises the weight of his body on his toes?
The following belong to which class of lever?
A fire tongs
The following belong to which class of lever?
A pair of scissors
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.
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?
