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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. 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.______________________ | |