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M1 Alevel M1 EDEXCEL MATHS (2018 JUNE)!

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Original post by rubyv
For 7a, did anyone else put that the string is taut? If it's taut then both particles would move together with the same acceleration, right?


I suppose, but I think that the wording of the question was strongly implying that the string is the reason as it was asking for a modelling assumption. It said that the string was/is taut and Idon't think they said it was 'modelled as' or 'assumed to be' so I guess 'taut' sadly doesn't count. It might do, I don't know.
Reply 21
Original post by francist11
I suppose, but I think that the wording of the question was strongly implying that the string is the reason as it was asking for a modelling assumption. It said that the string was/is taut and Idon't think they said it was 'modelled as' or 'assumed to be' so I guess 'taut' sadly doesn't count. It might do, I don't know.


Okay, thank you!
Original post by francist11
Yeah I did that. 0.2(v-10)=7 and that gives 45. Then i used 45^2 = U^2 + 2g(2.5) and got 44.4...? Or did I read the mass incorrectly or something?


I got exactly the same ?! What did we do wrong I don’t get it
Original post by Pcman
1
a. p=1/4u (3 marks)
b. q=5/4u (3 marks)
2
6.66N (10 marks)
3
a. TC=75g (735N)
b. m=600/7 leading to Td=2898N
4
a. u=24 (6 marks)
b. t from ground to B=0.105s (3sf) (from 2.5 to ground=0.102s, total=0.207s)
c. graph (3 marks)
5
a. NR of woman=708N
b. max people=6 (as 6.979 people gives 10kN)
6
a. resolving by multiplying F1+F2 by -1(i)=-2(j)
b. accelation √(122+62) = 13.42
c. bearing=243° (3 marks)
7
a. String is inextensible (1 mark)
b. 1.6mg-T=4ma T-mg=ma (5 marks)
c. a=0.12g (1.176) (5 marks)
d. distance achieved by Q after P hits the ground = 3h/25, + h moved already gives 28h/25 (5 marks)

This is the official unofficial mark scheme.
These are the proper answers.


PLS explain the equation of motion why no friction in the first one? q7b
(edited 5 years ago)
Original post by Angels1234
I got exactly the same ?! What did we do wrong I don’t get it


I don't know either! Maybe they did v-(-10) which would give v+10=35 and they got 25? That's probably it - a simple minus mistake, I'm guessing?
Original post by francist11
I don't know either! Maybe they did v-(-10) which would give v+10=35 and they got 25? That's probably it - a simple minus mistake, I'm guessing?


Would we get any marks 😭
Original post by Angels1234
Would we get any marks 😭


Method ones for sure, but obviously not the accuracy ones, though there's probably only 2 of those out of the 6 or 7 there were.
Original post by francist11
Method ones for sure, but obviously not the accuracy ones, though there's probably only 2 of those out of the 6 or 7 there were.


Imagine , this is my third time doing m1 and my first time doing fp2 and I still did better in fp2 . Rip me
Reply 28
Luckily i got 89 ums in m1 so im really happy.

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