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Water is filled in a container having sq...

Water is filled in a container having square base `(2m times2m)`.Height of water in the container is h=2m . Now the container is tilted so that its base makes an angle of `30^(@)` with the horizontal.The tilted container is accelerated to right with a horizontal acceleration of `a=2m/s^(2)` .Now the water surface makes an angle a with horizontal. If the value of `alpha` is `tan^(-1)((1)/(x))` ,then what is the value of x(`g=10m/s^(2)`)?

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