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-   -   Forces between two weights (https://www.askmehelpdesk.com/showthread.php?t=336802)

  • Apr 1, 2009, 05:42 PM
    bee27
    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
  • Apr 2, 2009, 05:23 AM
    Perito

    What equation are you trying to use to calculate this?
  • Apr 2, 2009, 05:40 AM
    Capuchin

    The weights are moving at constant speed. What does this tell you?
  • Apr 2, 2009, 03:23 PM
    bee27

    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
  • Apr 2, 2009, 03:25 PM
    bee27
    Sorry don't know how to add to my question
  • Apr 23, 2009, 04:18 AM
    Aaahopqxpqxp

    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?
  • Apr 23, 2009, 09:43 AM
    Unknown008

    [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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