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Edexcel AS/A2 Mathematics M1 - 8th June 2016 - Official Thread watch

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    (Original post by L'Evil Wolf)
    Somone please help with this q

    http://www.thestudentroom.co.uk/show....php?t=1255487
    sorry cant see the question
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    (Original post by candol)
    the key is that final velocity becomes the initial velocity for the next stage of motion
    Ok that makes sense thanks
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    (Original post by L'Evil Wolf)
    Somone please help with this q

    http://www.thestudentroom.co.uk/show....php?t=1255487
    try sketching the diagram first.
    After that we can look at puting in the angles/sides
    I would then suggest finding the angle at B (use the cosine rule as you have all 3 sides)
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    I'm going to fail so hard. Please help me, I don't understand any of it..
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    How do you know if you need a numerical answer or in terms of letter, it doesnt seem apparent and its so annoying
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    Hi, Very simple question, when do you know you have to split something into its components, e.g. the weight of a particle?

    Thanks
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    (Original post by metrize)
    How do you know if you need a numerical answer or in terms of letter, it doesnt seem apparent and its so annoying
    Do you mean surd and decimals?
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    (Original post by mani119)
    Do you mean surd and decimals?
    Like T=3/5m for example
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    (Original post by ryandaniels2015)
    Hi, Very simple question, when do you know you have to split something into its components, e.g. the weight of a particle?

    Thanks
    When it's acting at an angle so if the object was on a slope you'd split it

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    (Original post by metrize)
    How do you know if you need a numerical answer or in terms of letter, it doesnt seem apparent and its so annoying
    Yeah I always get stuck on that as well I spend ages trying to work out a numerical answer and then the mark scheme has it in terms of a letter

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    (Original post by flowerspace)
    When it's acting at an angle so if the object was on a slope you'd split it

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    Thanks but what about this case, why would you split for the ring?
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    (Original post by ryandaniels2015)
    Thanks but what about this case, why would you split for the ring?
    Actually mark scheme says you don't, why?

    Thanks
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    (Original post by ryandaniels2015)
    Thanks but what about this case, why would you split for the ring?
    I have no idea, I would split it for the string.
    Maybe they are resolving it relative to the string not the ring that might make sense.
    Do you have the mark scheme?

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    (Original post by ryandaniels2015)
    Actually mark scheme says you don't, why?

    Thanks
    Ok yeah that makes sense
    It's because it's not on a slope the rod is not at an angle

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    Thx for the reply, why would you resolve the string?
    (Original post by flowerspace)
    Ok yeah that makes sense
    It's because it's not on a slope the rod is not at an angle

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    (Original post by kiasne)
    I'm going to fail so hard. Please help me, I don't understand any of it..
    I feel you. I'm retaking M1 and just started t revising for it today. Vectors and graphs are the ony topic I can't comprehend and I really need 90%+ on it

    You should try focusing on topics you do not understand first. Try watching these tutorials first, and then jump straight to question by topic booklet on Physics and Maths Tutor.

    (Original post by metrize)
    How do you know if you need a numerical answer or in terms of letter, it doesnt seem apparent and its so annoying
    I usually don't give numerical answers unless the question is on kinematics or it asks for magnitude. Use letters if one of the info they give you (such as speed before collision, weight of a particle) is in letters.
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    (Original post by ryandaniels2015)
    Thx for the reply, why would you resolve the string?
    Does this diagram make sense?

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    (Original post by flowerspace)
    Does this diagram make sense?

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    I should have added the friction too, here

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    (Original post by flowerspace)
    I should have added the friction too, here

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    Yes thanks very much, but it's not splitting that bothers me, it's when to do it?
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    (Original post by ryandaniels2015)
    Yes thanks very much, but it's not splitting that bothers me, it's when to do it?
    Ok, do you have the answers for that question and then I'll see if I can do it and write out why I'm doing each step?

    I've attached some pictures to try and explain it (i think)
    Sorry I'm pretty bad at explaining things haha


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