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Is a person doing any work by holding a ...

Is a person doing any work by holding a suitcase ?

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No, as there is no displacement of the suticase.
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Knowledge Check

  • An average person doing moderate work requires daily an energy

    A
    750 kcal
    B
    1000 kcal
    C
    2000 kcal
    D
    2800 kcal

  • A, B and C can do a piece of work in 12, 15 and 20 days. How much minimum time should be required to complete this work if more than two persons can not work in a day and in any two consecutive days same pair can not work ?

    A
    `6(2)/(3)`
    B
    `7(1)/(17)`
    C
    8
    D
    9

  • If 20 persons can do a piece of work in 7 days, then the number of persons required to complete the work in 28 days:

    A
    4
    B
    5
    C
    14
    D
    10

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    What will be the work done in carrying a suitcase of 10 kg while standing on the platform ?

    Does a gas do any work when it expands adiabatically ? If so, what is the source of the energy needed to do this work ?

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