Question

1. The atmospheric pressure is 100KPa. What is the force exerted by the atmosphere on a rectangular surface that measures 0.5m by 0.4m?
2. In a hydraulic press, an effort of 50N Is applied to the piston to raise a load of 500N. If this effort piston has an area of 5 square-cm, what is the area of the load piston?
3. A hydraulic press consists of two cylinders of cross-sectional area 0.2 square-m and 5.0 square-m . The piston in the smaller area is pushed down with a force of 100N through a distance of 0.2m. Calculate:
i) the pressure transmitted by the fluid ii) the pressure exerted by the piston in the large cylinder iii) the distance moved by the piston in the larger cylinder.

Answer 1

Answer:

1. The atmospheric pressure is 100KPa. What is the force exerted by the atmosphere on a rectangular surface that measures 0.5m by 0.4m?

➡ P=P/A

--> F=PA

--> 100×10^3×0.5×0.4

--> 20KPa.

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Answer 2

1. The atmospheric pressure is 100KPa. What is the force exerted by the atmosphere on a rectangular surface that measures 0.5m by 0.4m?

➛ P = P/A

➛ F = PA

➛ 100×10^3×0.5×0.4

➛ 20KPA.