A hollow cylinder of mass m made heavy a...

A hollow cylinder of mass `m` made heavy at its bottom is floating vertically in water. It is tilted from its vertical position through an angle `theta` and is left. The restoring force acting on it is

`mg cos theta `

`mg sin theta `

`mg [(1)/(cos theta) -1]`

`mg [(1)/(cos theta )+1]`

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