Answer / seunwole

there exists an inverse relationship between pressure (P) and the surface area (A).

Pressure=(Force/Area)
By manipulating The Force-Area Ratio we can achieve what you ask.
You only need to reduce appropriately the surface area on which the 6 Kg weight is acting to match the pressure created by the 40 Kg weight.

seunwole

Answer / arun kumar m

F=P*a
the diaphragm area is large to force the plug in 6ksc air.

Answer / farhan riaz

to increase  the  dia  of  diapharam  plate

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