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AQA A2 Mathematics MM2B Mechanics 2 - Monday 22nd June 2015 [Exam Discussion Thread] Watch

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    Same, although i got it in the form 2-root3 but it is still 0.268
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    (Original post by kingkendrick)
    In q2 the centre of mass given was 4.95? Or 4.77? Can't remember
    4.3 i think
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    (Original post by kingkendrick)
    Then I think my AC was 4.85 because it was 0.55+centre of mass (4.3?)
    yes, could you explain your method please?
    i cant remember
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    Question 9... (2 - Root 3)
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    Here's what I did...

    Don't think it's right as nobody I spoke to got these values, but hopefully method marks! I used similar triangles to get the length PT.

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    I know this is really awkward of me but is there any chance of the number of marks going next to unoffical mark scheme really can't remember them?
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    (Original post by meerkat96)
    Question 9... (2 - Root 3)
    I got the same but my teacher said u CAN be above 1? I'm hoping that it's still correct though
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    Verdict for grade boundaries for a*???
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    (Original post by jchap9776)
    Verdict for grade boundaries for a*???
    63 to 70

    It could go either way depending on how irritating AQA are.

    But; I am pretty sure (unless you're doing FM?) that the A* is awarded on C3 and C4 only though...
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    Can anyone verify the true answer to Q9? There seems to be some disagreement?

    I didn't even answer it so I don't know.

    Also, can some people help me collect marks for certain questions? I know the last one was 8?


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    (Original post by kingkendrick)
    In q2 the centre of mass given was 4.95? Or 4.77? Can't remember
    C.O.M was 4.3m I think
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    (Original post by CD223)
    Can anyone verify the true answer to Q9? There seems to be some disagreement?

    I didn't even answer it so I don't know.

    Also, can some people help me collect marks for certain questions? I know the last one was 8?


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    I think question 5 ( about washing machine) was 6 and the one about power (think it was q6) was 9 marks
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    (Original post by Gymnast)
    I think question 5 ( about washing machine) was 6 and the one about power (think it was q6) was 9 marks
    Thanks!


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    Any more amendments?


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    2-root3 here as well for question 9, and I'm pretty sure about it

    The quadratic I got for mu was mu^2 -4mu +1 = 0
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    On question 4 I had my calculator in radians. How many marks would I lose when I have shown the correct working for each part
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    (Original post by Pilz)
    2-root3 here as well for question 9, and I'm pretty sure about it

    The quadratic I got for mu was mu^2 -4mu +1 = 0
    I got the same, and I think this should be the correct answer
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    (Original post by blueinteger)
    I got the same, and I think this should be the correct answer
    Changed now


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    Thoughts on boundaries?


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    (Original post by CD223)
    Thoughts on boundaries?


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    A* = 65
    What do you think?
 
 
 
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