Hydraulics and Fluid Mechanics in ME
A right circular cylinder open at the top is filled with liquid and rotated about its vertical axis at such a speed that half the liquid spills out, then the pressure intensity at the center of bottom is

one-half its value when cylinder was full
zero
one-fourth its value when cylinder was full
cannot be predicted from the given data

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Hydraulics and Fluid Mechanics in ME
The conditions for the stable equilibrium of a floating body are

all the above are correct
the center of buoyancy and the center of gravity must lie on the same vertical line
the meta-center should lie above the center of gravity
a righting couple should be formed

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