Questions

Radius of one arm of hydraulic lift is four times of radius of other arm. What force should be applied on the narrow arm to lift 100 kg?

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26.5 N

62.5 N

6.25 N

8.3 N

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detailed solution

Correct option is B

By Pascal's law FA=fa⇒f=FaA=100g×πr2π(4r)2=62.5 N

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