A circular cylinder of height h(0)=10 cm...

A circular cylinder of height `h_(0)=10 cm ` and radius `r_(0)`=2 cm is opened at the top and filled with liquid. It is rotated about its vertical axis. Determine the speed of rotation so that half the area of the bottom gets exposed (`g=10 m//s^(2)`):

25 rad/s

50 rad/s

100 rad/s

200 rad/s

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