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3 years ago

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A piston 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

1 answer:

RoseWind [281]3 years ago

6 0

<h3><u>Answer;</u></h3>

B. 3.43 kPa

<h3><u>Explanation</u>;</h3>

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

<h3> <u>= 3.43 kPa</u></h3>

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