Apiston above a liquid in a closed container has an area of 1m2. the piston carries a load of 350 kg. what will be the external pressure on the upper surface of the liquid?

a. 27.3 kpa
b. 3.43 kpa
c. 4.90 kpa
d. 68.6 kpa

B. 3.43 kPa

Pressure is given by the formula;

Pressure = Force / Area

Force is the product of mass and acceleration due to gravity. 

 Thus;  Force = mass x acceleration due to gravity

Substituting;

               Force = (350 kg) x (9.8 m/s²)

               Force = 3430 N

Then, using the first equation;

                Pressure = 3430 N / 1m² or Pa

it breaks and dirupture other materials and other sencews from the bottom

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