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-   -   Work done by external agent (https://www.askmehelpdesk.com/showthread.php?t=699570)

  • Sep 5, 2012, 01:42 AM
    tanmoy556
    Work done by external agent
    A block of mass 5 kg is raised from the bottom of a lake to a height of 3 m without change in kinetic energy.if the density of the block is 3000kg/m3, then the work done is ?

    A) 150 J
    B)100 J
    c) 50 J
    D) 175 J


    Please explain the answer as well
  • Sep 5, 2012, 03:29 AM
    Unknown008
    What is the formula for work done?

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