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    bee27's Avatar
    bee27 Posts: 3, Reputation: 1
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    #1

    Apr 1, 2009, 05:42 PM
    Forces between two weights
    Two weights are connected by a massless wire and pulled upward with a constant speed of 1.50 m/s by a vertical pull P. The tension in the wire is T
    Weight 1 is 25N, weight 2 is 100N
    QUESTION1) P is what
    QUESTION2) T is what
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #2

    Apr 2, 2009, 05:23 AM

    What equation are you trying to use to calculate this?
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
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    #3

    Apr 2, 2009, 05:40 AM

    The weights are moving at constant speed. What does this tell you?
    bee27's Avatar
    bee27 Posts: 3, Reputation: 1
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    #4

    Apr 2, 2009, 03:23 PM

    For question 1 ) it said what is P closest to: a)245N, b) 1225N, c)25N, d)125N, e) 187.5N
    For question 2) what is T closest to: a)980 b)100N c)125N d)75 e)150N
    bee27's Avatar
    bee27 Posts: 3, Reputation: 1
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    #5

    Apr 2, 2009, 03:25 PM
    Sorry don't know how to add to my question
    Aaahopqxpqxp's Avatar
    Aaahopqxpqxp Posts: 6, Reputation: 1
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    #6

    Apr 23, 2009, 04:18 AM

    Try drawing a free body diagram. (a small sketch analyzing the forces) that's where I would start. And also, it is at CONSTANT speed. What does this say about acceleration?
    Unknown008's Avatar
    Unknown008 Posts: 8,076, Reputation: 723
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    #7

    Apr 23, 2009, 09:43 AM

    [quote=bee27]sorry don't know how to add to my question[/math]

    No need to modify your question. And you should be able to do this question without the given possible answers.

    Firstly, you need to know the force you need to lift the two weights. Then use your formula F=ma. (f is force, m is mass and a is acceleration)

    Post back your answer.
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