The length of a nut-cracker is 12 cm.

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asked Dec 7, 2018 in Class X Science by navnit40 (-1,146 points)

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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1 Answer

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answered Dec 7, 2018 by priya12 (-10,184 points)

Given : Effort arm = 12 cm, Load arm = 4 cm, Effort E = 100gf,

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.

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