1free suface means surface of container...
ans √2gh(2*10-4).......wasnt value of H given???????
Q. A container is filled with liq of density d upto a height h. now a pin hole having cross sectional area 'a' is made at the bottom of the container. The area of cross section of the container is A. take a/A = 2*10-4. The accn of the free surface of liquid column is given by x mm/s2. Find x
btw what is free surface? surface of container or surface of hole?
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