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    Attachment 618728Hey! A little stumped on the last part of this question, anyone know how to tackle this?

    Many thanks in advance!
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    (Original post by Redefine)
    attachment not found

    Ahh, sorry ;/ (hopefully this works)

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    DIAGRAMS.

    Seriously though, draw the whole system out and label the forces you see. You should be able to get simultaneous equations in a and T for the first bit, then the rest is just suvat.
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    (Original post by an_atheist)
    DIAGRAMS.

    Seriously though, draw the whole system out and label the forces you see. You should be able to get simultaneous equations in a and T for the first bit, then the rest is just suvat.

    Hey!

    Yes, its actually only the suvat part I'm struggling with
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    (Original post by marinacalder)
    Hey!

    Yes, its actually only the suvat part I'm struggling with
    There are two parts the suvat. The first and last a metres. You can work out the velocity at the end of first a metres and from there how far it travels until it stops
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    (Original post by marinacalder)
    Attachment 618728Hey! A little stumped on the last part of this question, anyone know how to tackle this?

    Many thanks in advance!
    As with all mechanics problems, words make no sense!- draw out a neat, labelled diagram, and everything should fall into place.

    Show us some working, and I'll be happy to guide you further if you remain stuck.
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    (Original post by OloMed)
    As with all mechanics problems, words make no sense!- draw out a neat, labelled diagram, and everything should fall into place.

    Show us some working, and I'll be happy to guide you further if you remain stuck.
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    So sorry to keep bugging you guys
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    (Original post by marinacalder)
    Ahh, sorry ;/ (hopefully this works)

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    5) a) B: 2mg - T = 2ma => T = 2m(g - a)
    A: T - 3mg/5 = ma => T = m(3g/5 + a)

    So 2(g - a) = 3g/5 + a
    => 2g - 2a = 3g/5 + a
    => 3a = 7g/5
    => a = 7g/15 ms^-2

    So T = 2m(8g/15) = 16mg/15 N

    b) Modelling A when a > 0: a = 7g/15, s = @, u = 0
    So v^2 = u^2 + 2as => v^2 = 2(7g/15)@ = [email protected]/15

    Then when a < 0: u^2 = [email protected]/15, a = -3g/5, v = 0
    So v^2 = u^2 + 2as => 0 = [email protected]/15 - (6g/5).s
    => (6/5).s = [email protected]/15
    => 3s = [email protected]/3
    => s = [email protected]/9

    Dist from edge = [email protected] - @ - [email protected]/9 = [email protected]/9 m
 
 
 
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