A cubical block is floating in a liquid with half of its volume immersed in the liquid. When the whole system accelerates upwards with acceleration of g/3, the fraction of volume immersed I the liquid is 1/N. Then N is equal to______

A cubical block is floating in a liquid with half of its volume immers

1.	A cubical block is floating in a liquid with half of its volume immersed in the liquid. When the whole system accelerates upwards with acceleration of g/3, the fraction of volume immersed I the liquid is 1/N. Then N is equal to______
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