A boat having a length of 3 m and breadt...

A boat having a length of 3 m and breadth of 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of the mas is:

60kg

62kg

12kg

128kg

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The correct Answer is:

Weight of the man should be equal to extra buoyancy force created.
`mg=V rhog`
`implies mg = (2xx3xx1/100) 1000g`
`implies m = 60kg`.

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