Statement of a problem № 11276


Multiple-Concept Example 8 presents an approach to problems of this kind. The hydraulic oil in a car lift has a density of 8.30 × 102 kg/m3. The weight of the input piston is negligible. The radii of the input piston and output plunger are 7.70 × 10-3 m and 0.125 m, respectively. What input force F is needed to support the 24 500-N combined weight of a car and the output plunger, when (a) The bottom surfaces of the piston and plunger are at the same level, (b) The bottom surface of the output plunger is 1.30 m above that of the input piston?

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