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प्रश्न
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.
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उत्तर
(i) Sum of the clockwise moments about the fulcrum is equal to the sum of the anti-clockwise moments about the fulcrum.
(ii) Lever of class III,
Example: forceps or a pair of tongs.
(iii) E × 100 = 190 × 20
∴ E = 38 N.
संबंधित प्रश्न
Give one example of a class I lever where mechanical advantage is more than one ?
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The following belong to which class of lever?
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The following belong to which class of lever?
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The following belong to which class of lever?
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The following belong to which class of lever?
Fore-arm
In the diagram shown alongside a claw hammer, 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 this class of lever.
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A lever is used to multiply the force.
