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A man weighting 60 kgis standing at the ...

A man weighting 60 kgis standing at the centre of a flat boat and he is 20 m from the shore. He walks 8 cm on the boat towards the shore and then halts. The boat weights 200 kg How far is the from the shore at the end of this time?
[Hints : As the system is free from external force, centre of mass of the system consisting of man and boat must not move.

Text Solution

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The correct Answer is:
13.8 m
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Knowledge Check

  • A man weighing 80 kg is standing at the centre of a flat boat and he is 20 m from the shore. He walks 8 m on the boat towards the shore and then halts. The boat weight 200kg. How far is he from the shore at the end of this time?

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    `11.2m`
    B
    `13.8m`
    C
    `14.3m`
    D
    `15.4m`

  • A man weighing 80 kg is standing at the centre of a flat boat and he is 20 m from the shore. He walks 8 m on the boat towards the shore and then halts.The boat weight 200 kg. How far is he from the shore at the end of this time ?

    A
    11.2 m
    B
    13.8 m
    C
    14.3 m
    D
    15.4 m

  • A dog weighing 5kg is standing on a flat boat so that it is 10 metres from the shore. It walks 4m on the boat towards the shore and then halts. The boat weighs 20kg and one can assume that there is no friction between it and water. The dog from the shore at the end of this time is

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    `3.4 m`
    B
    `6.8 m`
    C
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    D
    `10 m`

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