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The average mass that must be lifted by a hydraulic press is `80 "kg"`.If the radius of the larger piston is five times that of the smaller piston, what is the minimum force that must be applied?

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The average mass that can be lifted by a hydraulic press is 100kg. If the radius of the larger piston is six times that of a smaller poston. What is the minimum force (in kg wt) that must be applieed? Use g=10ms^(-2) .

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A car is to be lifted by a hydraulic jack which consists of two pistons. The large piston is 80 cm in diameter and the smaller piston is 16 cm in diameter. If W is the weight of the car, then how much smaller force is needed on small pistonto lift the car?

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SL ARORA-Mechanical Properties of fluids-Exercise
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