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The fine piston of a hydraulic jack has a diameter of 1.30 cm. With an applied...

The fine piston of a hydraulic jack has a diameter of 1.30 cm. With an applied force of only 23 N it was possible to lift a weight of 1850 N. Assuming that both pistons are circular, what is the diameter of the wide working piston for this hydraulic jack?
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Answer #1

Given,

Diameter of fine piston is

Area of fine piston is  

Force exerted on the fine piston is  

Force on the wide working piston is

Let   be the diameter of the wide working piston and   be its area

then  

By hydraulic principles, pressure exerted on both pistons should be same,

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