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प्रश्न
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?
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उत्तर
Given : Effort arm = 12 cm, Load arm = 4 cm, Effort E = 100 gf, Load L = ?
(Nut-cracker is the lever of second order)
Since, `"Load"/"Effort"=("Effort arm")/("Load arm")`
∴ `"L"/100=12/4`
or L = 300 gf.
Thus, a force of 300 gf is required to crack the nut without using the nut-cracker.
संबंधित प्रश्न
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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):
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A crowbar of length 100 cm is used to lift a load of 5 kgf. It has its fulcrum at a distance of 20 cm from the load. Calculate:
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