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Evgesh-ka [11]
4 years ago
15

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. 4.90 kPa B. 3.43 kPa C. 27.3 kPa D. 68.6 kPa
Physics
2 answers:
ddd [48]4 years ago
7 0
The weight of the load is (mass) x (gravity)

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

                               =        3,430 newtons .

The force on the surface of the liquid is the weight of the piston and its load.

The pressure on the surface of the liquid is  (force) / (area) 

                                                             =  (3,430 newtons) / (1 m²)

                                                             =  3,430 pascals

                                                             =      3.43 kPa

This doesn't include anything for the weight of the piston without its load,
but it's certainly the closest of the choices.
Blababa [14]4 years ago
4 0
3.43k is the correct one
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