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    (Original post by sequence123)
    You normally do exams standing up?
    ahh, if they would let me, it'd be a much more interesting experience
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    :-(
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    (Original post by simiddd)
    Wot did u people get for Question 6 heres my answers
    1)a)35
    b)14.9
    2a)31/11
    b)15/77
    3a)c=4
    b) -36i + 8j
    4a) 1.8m
    b)6.75
    5a) 2/3
    b) proof
    6a) -----------
    b) ---------
    c)--------
    7a)117.6J
    b) 10N
    c) 0.393
    d) 5.4
    Mine is almost exactly the same as yours, except 6 as i dunno wt u wrote~
    For Q.2, if u round up to 3 in part (a), then the answer in (b) will be different from the one if u use 31/11 in part (a)....
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    Kinda tricky. I guess thatsums it up for me. I estimate (hell of an estimate) that i don't need more than about 65% for an A - i reckin i got about 90%. Chuffed

    That last question was a bugger tho - i got 7.3, 10.1, 7.01 as various different answers each time i tried it, all of which are obviously wrong! rats.
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    that frame Q was IMPOSSIBLE...bludy sideways line...... :banghead: :banghead: :banghead:
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    i got a slower speed even after fordham moved back...all i cud think about was his fat ass movin around infront of a dartboard...ahhh...
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    (Original post by mackin boi)
    at least u have the luxury...A2 no going back...g2 make plans for ma year out :mad:
    :dito:
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    (Original post by simiddd)
    Wot did u people get for Question 6 heres my answers
    1)a)35
    b)14.9
    2a)31/11
    b)15/77
    3a)c=4
    b) -36i + 8j
    4a) 1.8m
    b)6.75
    5a) 2/3
    b) proof
    6a) -----------
    b) ---------
    c)--------
    7a)117.6J
    b) 10N
    c) 0.393
    d) 5.4
    ! yeahhh got the same!! but cant remember for question 2 though..was that centre of mass? if so, i got 3cm
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    on Q6 was there a loss in PE and a loss in KE?
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    Can anyone clarify Q2, i too got 31/11. The lengths of the trapezium were 7 along the top, 4 along the bottom and 4 on the side.
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    (Original post by mackin boi)
    i dnt knw y i found it soo bad...i jst lost ma concentrtion...bludy chemistry yestrday...i focused on that too much
    Yeh me too...... i did so much revision for chemirstry didnt get time for m2....the on top of tht i had to stay undr supervision till 4.30 so when i gt home it was 5.00 so i basically all the revision i did 4 m2 was like look thru past papers
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    31/11 is the right answer OH YES!
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    AHH C4 SAVE ME PLEASEEE...FUK CHEM 6 AND FYSIX 6...C4 AL THE WAY...HU EVA HERD OF A TAMIL NOT GETIN AN A IN MAFZ (THAT AINT RACIST I THInk)....
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    That was a really nice M2 exam! I was so glad that the collisions question wasn't at the end because they're awful when they don't give you numbers and ask for the range of 'e'. I'm sure I ballsed some of it up but I managed to get through it in time, a first in a mechanics exam!

    One more exam to go... Physics synoptic on Monday... eeek!
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    (Original post by jmzcherry)
    Can anyone clarify Q2, i too got 31/11. The lengths of the trapezium were 7 along the top, 4 along the bottom and 4 on the side.

    is that the centre of mass?

    by the way, it was not a lamina.
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    (Original post by jmzcherry)
    Can anyone clarify Q2, i too got 31/11. The lengths of the trapezium were 7 along the top, 4 along the bottom and 4 on the side.

    :eek: I got 3cm for that. Did you do it as a solid shape or as a wire? I thought it was a wire?



    Oh and can anyone remember the question on Q3?
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    (Original post by davedave)
    :eek: I got 3cm for that. Did you do it as a solid shape or as a wire? I thought it was a wire?
    yes! the answer was 3!...it was wire not a solid shape!
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    could someone go through the so called "easy proof" for Q 5b?

    In the exam I got the speed of b after collision was greater than that of A so I panicked a bit there but didn't have time to redo it. WHere as someone told me that B came to rest.

    However I have just done it now, and found that the speed of B is 2/7 u - is this correct?!?

    probly best if someone goes through it.

    Also, the persoin talking about a trapezium thing, that is wrong, you ahvee to treat it as rods. In the exam, I wasted time by not reading the question and so treating it as a triangle and a square, where I then read it and realised it was rods, so I left the question out and came back to it at the end. If you treat it as rods, the answers I got there cofm from ab is 3cm and the value of k is 1/7

    The Thrust question made me **** myself - someone promised there would be no thrust question this time :P Still, aparently I might have not done too bad?

    for first part, take moments from A, : T cos 30 * 05 = 1.5 * 30 g where T is the thrust - is this right?

    then for 2nd part: resolve horizontally: Reaction of wall = T sin 30
    Resolve vertically: reaction of wall = T cos 30 - 30 g

    At first, I only resolved horizontally, since I thought there would only be a horizonal force ?!? and then I read the next part, part c and realised that there is a vertical as well, as it says, prove that there now is only a horizontal reaction, haha.

    You actually get that the wall hinge thing is pushing it down which is quite crazy it seems

    So, then you do a the resultant = square root of (horizontal ^2 + vertical ^s)

    and for part c: take moments from M, therefore in equilibrium, so 1.5 * vertical reaction of wall = 0 => vertical reaction of the wall = 0.

    Is this right?

    Cheers, Daniel
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    It was a wire...

    Why the hell would anyone bend a trapezium out of a wire in the first place, they should have put it into context... "Paul was a bored student who had just found a paper-clip..."
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    For the centre of mass i got 3cm from AB
    So taking moments about midpoint of BC gave
    0.5 M = 3.5 k M
    So 1 = 7 k

    k = 1/7 maybeeee??!!!!
 
 
 
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