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    tanmoy556's Avatar
    tanmoy556 Posts: 3, Reputation: 1
    New Member
     
    #1

    Sep 5, 2012, 01:42 AM
    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
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
    Uber Member
     
    #2

    Sep 5, 2012, 03:29 AM
    What is the formula for work done?

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