Answer to Question #161001 in Classical Mechanics for Ermus Ken

Question #161001

An engineering student wants to build a hydraulic pump to lift a 1,815 N crate. The pump will have two pistons connected via a fluid chamber. The student calculates that a force of 442 N will be exerted on the small piston, which will have an area of 50.2 cm². What must be the area of the large piston be to exert the desired force?


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Expert's answer
2021-02-04T02:33:12-0500
F1A1=F2A2,\dfrac{F_1}{A_1}=\dfrac{F_2}{A_2},A2=A1F2F1=50.2 cm2(1 m100 cm)21815 N442 N=0.0206 m2=206 cm2.A_2=\dfrac{A_1F_2}{F_1}=\dfrac{50.2\ cm^2\cdot(\dfrac{1\ m}{100\ cm})^2\cdot1815\ N}{442\ N}=0.0206\ m^2=206\ cm^2.

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