1. Describe an experimental proof of Pascal's law .
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Answers
Explanation:
Proof the pascal’s law.
Experimental Proof. Consider a spherical vessel having for cylinderical tubes A, B, C and D each fitted with air tight frictioriless piston of area of corss-section a, a/2, 2a and 3a respectively.
Fill the vessel with an incompressible liquid so that no air gap is left inside the vessel and piston fitted in the various cylindrical tubes. Push the piston A with force F.
It is seen that all other pistons will be pushed outwards. To keep the pistons at their respective original positions, the force F/2, 2F and 3F respectively required to be applied on pistons of tubes B, C and D respectively to hold them. Now pressure developed on liquid in tubes, B, C and D are F/2, 2F/2a, 3F/3a i.e., such,equal to F/a. This indicates that the pressure applied is transmitted equally to all parts of liquid. This proves Pascal law