# A hydraulic autom

Maximum mass of a car that can be lifted (m) = 3000 kg

Area of cross section of piston carrying the load (A1) = 452 cm2

= 0.0452 m2

Maximum force exerted by the car due to its weight (F) = mg

= 3000kg × 9.8m/s2

= 29400 kgm/s2

Pressure on the piston lifting the car P = F/A

=

= 6.504 × 105 Pa

Pressure is transmitted equally in all the directions of a fluid. Therefore the maximum pressure on the smaller piston is 6.504 × 105 Pa.

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