Railways Technical Ability Metal Forming, Casting and Cutting Question Bank Metal Casting

  • question_answer A right circular cylinder is filled with a liquid upto its top level. It is rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure at the point of intersection of the axis and bottom surface is:

    A) Same as before rotation

    B) Half on the value before rotation

    C) Quarter of the value before rotation

    D) Equal to atmospheric pressure

    Correct Answer: D

    Solution :

    \[\frac{1}{2}.\pi {{r}^{2}}z=\frac{1}{2}.\pi {{r}^{2}}h,\,z=h\]

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