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physics

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A hallway display of energy is constructed in which several people pull on a rope that lifts a block 1.15 m. The display indicates that 1.05 J of work is done. What is the mass of the block?

  • physics - ,

    The weight is
    Work/(lift distance) = 0.946 Newtons

    Divide by g for the mass in kg.

    That's only about two pounds.

    Not much of a display. They certainly didn't need three people for that.

    Are you sure you got the decimal point right for theWork in Joules?

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