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OCR Physics A G481 Mechanics [Thursday 17th May 2012]

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    (Original post by canabel)
    i hope the calculation is alright though my ans is different to quite a lot of my fds -o-
    Which calculations?
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    i think it was alright, realised i screwed up on the last question with my rearranging but may get the marks for recognizing what to do -__- only aiming for b/c so thought it was okay epecially the large amount of definitions, eassy marks.. did anyone mention elastic hysterisis for the material graphs?
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    (Original post by JuxtaposedJames)
    No hard maths questions. Some of the wordy questions were a little bit picky and I guess I will loose a couple there. Apart from that it was really nice
    what did you put down for the motion question when both A and B are moving ?
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    What did you guys get for the radius? 10?
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    (Original post by ss2012)
    what did you put down for the motion question when both A and B are moving ?
    Rotation but continuing moving in the right direction
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    Yeah I got 10 for the radius aswell :/ The volume was 900.... or something so I divided it by 3, then used pi x r^2 to work it out, dont know if its right .
    What did everyone get for the angle the acceleration makes with that slope?
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    Uh 11.7? Or 50 something. I just remember the two angles I obtained but not too which question it came from
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    It was defo harder than Jan paper.
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    (Original post by TheresaL)
    Uh 11.7? Or 50 something. I just remember the two angles I obtained but not too which question it came from
    I got 50 something
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    Too many definition and wordy questions than I would of liked :/

    Hoping for a lowish boundary for an A
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    it was harder than jan. hopefully grade boundaries will bw low
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    Yeah this exam went great.. For the two angles I got 11.8 and 59 respectively in terms of question order.

    Also i got 10 for radius in the last one and I stated that a higher density means more mass and thus higher k.e.. is this right?

    Also I got 119 kg for the mass of sledge and rider?

    hmmm... trying to remember more..
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    (Original post by JuxtaposedJames)
    Which calculations?

    the mass of the man.. u know the icy slope thingyy..
    i got 119 kg...
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    Yup I got the mass as 119 awl!
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    Yep got 119 too
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    I'm guessing grade boundaries would be 45/46 for an A. I think I got around those marks and usually I scrape A's so we'll see.

    Although test was harder than Jan so it might be 43/44 for an A.
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    Cannot believe car safety or GPS did not come up... unbelievable
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    (Original post by GoonerMarv)
    Yep got 119 too
    but do we need to - wsin(angle)?
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    (Original post by ingeek2010)
    Yeah this exam went great.. For the two angles I got 11.8 and 59 respectively in terms of question order.

    Also i got 10 for radius in the last one and I stated that a higher density means more mass and thus higher k.e.. is this right?

    Also I got 119 kg for the mass of sledge and rider?

    hmmm... trying to remember more..
    I got 11.8 for the angle with the sledge. What was the other angle question again?
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    (Original post by JohnSimmons)
    I got 11.8 for the angle with the sledge. What was the other angle question again?
    the other anglle question was for the vector triangle and i got 45 degrees, i thought that was right but people are saying it was 53 or something,

    what did other people get for the angle?

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