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What is the work done is crrrying a suitcase wighting 10 kg f on his head when he travels a distance of 5 m in the (i) verticl direction and (ii) horizontal direction ? `Take g=9.8 ms^(-2)`

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A man weighning 60 kg is holding of mass 10 kg on his head . What will be the work done by the man if he travels a distance of 20 m in (i) vertical direction ( up or down ? ) (ii) horizontal direction

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Knowledge Check

  • A man carries a load of 5 kg on his head through a distance of 10 m. the minimum amount of work is done when he

    A
    Move it up an inclined plane
    B
    Moves it down an inclined plane
    C
    Moves it over a horizontal surface
    D
    Lifts it vertically upwards.

  • The work done in dragging a stone of mass 100 kg up an inclined plane 1 in 100 through a distance of 10 m is ("takeg" = 9.8 m//s^(2))

    A
    zero
    B
    `980 J`
    C
    `9800 J`
    D
    `98 J`

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    A man of weight 60 kg f is carrying a load of 20 kg of on his head . He moves a distance of 25 m up an incline of 1 in 12 . Calculate the work done by him .

    A man weighing 55kg supports a body of 20kg on his head. Calculate work done by him if he moves a distance of 20m(i) on a horizontal road, (ii) upon a smooth incline of 1 in 5. Take g=10ms^(-2)

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