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प्रश्न
State Pascal’s law.
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उत्तर
Pascal’s law states that an increase in pressure at any point inside a liquid at rest is transmitted equally and without any change, in all directions to every other point in the liquid.
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संबंधित प्रश्न
Define one pascal (Pa), the S.I. unit of pressure.
Draw a simple diagram of a hydraulic jack and explain its working.
Explain the working of a hydraulic brake with a simple labelled diagram.
The areas of pistons in a hydraulic machine are 5 cm2 and 625 cm2. What force on the smaller piston will support a load of 1250 N on the larger piston? State any assumption which you make in your calculation.
What force is applied on a piston of area of cross section 2 cm2 to obtain a force 150 N on the piston of area of cross section 12 cm2 in a hydraulic machine?
Select the correct option.
The pressure exerted by 50 kg (g = 10 m/s−2) on an area of cross-section of 2 m2 is
The pressure in the water pipe on the ground floor of a building is 40000 pascals, whereas on the first floor it’s 10000 pascals. Find the height of the first floor. (Acceleration due to gravity g = 10 ms−2)
Do all liquids exert pressure?
The density of iron is 7800 kg m-3. What do you mean by this statement? What is density of water at 40C?
Analogy
Pascal’s law: ______:: Surface tensin: ______.
