A hydraulic lift is used to raise a car of mass 2000 kg. The area of cross-section of piston on which the car is placed is 375 cm 2 . What pressure the smaller piston has to bear if bigger piston is 2m higher than the smaller piston? The density of oil used in the lift is 800 kg/m 3 and g = 9.8 m/s 2 .

Correct Answer is : 5.37 × 105 N/m2

AAI ATC Junior Executive 25 Mar 2021 Shift 1 Paper

Question : 106 of 120

Marks: +1, -0

A hydraulic lift is used to raise a car of mass 2000 kg. The area of cross-section of piston on which the car is placed is 375 cm². What pressure the smaller piston has to bear if bigger piston is 2m higher than the smaller piston? The density of oil used in the lift is 800 kg/m³ and g = 9.8 m/s².

5.37 × 10⁵ N/m²
7.155 × 10⁵ N/m²
6.77 × 10⁵ N/m²
5.22 × 10⁵ N/m²

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