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प्रश्न
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.
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उत्तर
Class III lever.
संबंधित प्रश्न
What is a lever?
Give three examples for leavers of second order.
Give three examples for leavers of the third order.
The following belong to which class of lever?
A see-saw
The following belong to which class of lever?
Pliers Tools
The following belong to which class of lever?
A fire tongs
The following belong to which class of lever?
A pair of scissors
Shears, used for cutting metals and scissors used for cutting clothes are both examples of levers of the first order. However, whereas the shears always have short blades and long handles, the scissors often have blades much longer than the handles. Explain, why this is so?
In the following diagram of a wheelbarrow, mark the fulcrum (F) and indicate the directions of load (L) and effort (E) with arrows.
What class of lever is it? Give one more example of the same class of lever.
The diagram shows the use of a lever.
- State the principle of moments as applied to the above lever.
- Which class of lever is this? Give an example of this class of lever.
- If FA = 100 cm, AB = 90 cm, calculate the minimum effort required to lift the load.
