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Physics

Fluid-Mechanics

Easy

Question

In a hydraulic lift at a service station, the radii of the large and small pistons are in the ratio of 20: 1. What weight placed on the small piston will be sufficient to lift a car of mass on1200kg?

3 kgf
30 kgf
300 kg f3000 kgf
3000 kgf

The correct answer is: 3 kgf

$text Equating pressure, end text fraction numerator F over denominator pi R squared end fraction equals fraction numerator 1200 over denominator pi left square bracket 20 R right square bracket squared end fraction text or end text F equals 3 kgf$

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PhysicsFluid-Mechanics

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parallel

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