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    LetzelPretzel's Avatar
    LetzelPretzel Posts: 2, Reputation: 1
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    #1

    Nov 7, 2017, 07:13 PM
    Force required to move block when between two surfaces
    A 5N block sits on a table with a smaller (1N) block on top, attached to the table with a string that makes an angle of 65 degrees to the table. All coefficients of friction are 0.3. Calculate the force required to pull the block to the right.
    talaniman's Avatar
    talaniman Posts: 54,103, Reputation: 10852
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    #2

    Nov 7, 2017, 07:36 PM
    Which formula(s) are you using?
    LetzelPretzel's Avatar
    LetzelPretzel Posts: 2, Reputation: 1
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    #3

    Nov 7, 2017, 08:01 PM
    @talaniman Well, to find Ffr is mu*Fn and then to find the total force, you can say the sum of the forces must equal 0 because of f=ma, and a is zero, so the force would just be the opposing forces. But I don't understand how to incorporate the string and second block's friction...
    talaniman's Avatar
    talaniman Posts: 54,103, Reputation: 10852
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    #4

    Nov 7, 2017, 10:35 PM
    Draw a picture, and calculated the total force of the vector of magnitude.

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