A hydraulic press can lift
when a mass
is placed on the smaller piston. It can lift
when the diameter of the larger piston is increased by
times and that of the smaller piston is decreased by
times keeping the same mass
on the smaller piston.
Text Solution
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(25600) JEE Main 2021

Atmospheric pressure
will be acting on both the limbs of hydraulic lift.
Applying pascal's law for same liquid level



Diameter of piston on side of
is increased by 4 times so new area 
Diameter of piston on side of
is decreasing

(In order to increasing weight lifting capacity, diameter of smaller piston must be reduced)
Again, 
From equation 

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