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5. The diagram below is a hydraulic lift. The hydraulic lift is a device that consists of a tube of
oil with a piston at each end.
57 cm
piston X
I
cross-sectional area
1.2m²
cross-sectional area
4.8m²
weight =
oil
(a) Calculate the pressure difference between the bottom of piston X and the bottom of the oil.
[density of oil = 820kg/m³]
LETR
(3)
pressure difference
(b) A 24 kg mass is placed on piston X.
(i) Calculate the weight of the 24kg mass.
Give the unit.
11
piston Y
unit
Pa
(3)
