x Turn on thread page Beta
 You are Here: Home >< Maths

Edexcel - M3 - 18th May 2016 watch

1. (Original post by Student403)
physicsmaths
Student403, I got 1(a) wrong on the paper. I just differentiated v with respect to x, without putting it into the form of vdv/dx. I then multiplied it by 0.5 and subbed in x=3 to get 1/6N. How many marks do you think I'd lose for that question?
2. Is forgetting to write units a big deal?
3. My solutions:
1)a)1/3 N
b)7s
2)b)3cm
3)a)2.07+1.5=3.57m
b)24.01ms^-2
4)a)Proof
b)Tan(theta)=1/3, theta=18.4 degrees
5a)Proof
b)((mroot3)/6)*(lw^2 - 2g)
c)Proof
6)a)Sqrt(3gl/2)
b)Proof, using T(apex) > 0.
7)a)Proof, w^2=25
b)4ms^-1
c)T=0.2arcos(-0.75)=0.484s(3sf)
d)Proof, w^2=125/8
e)A=root(10)/5 = 0.632m
4. Physicsandmathstutor.com usually uploads models answers. But it isn't out yet. What was the acceleration in the 1st question? 1.63?
5. (Original post by Euclidean)
They might deduct one because it said the distance from AB

Posted from TSR Mobile
What about forgetting units for the other questions?
6. (Original post by Student403)
physicsmaths
I assume people want solutions on the actual paper, should i wait till i get the proper paper then print it out and write on there? or just write full solutions?

Posted from TSR Mobile
7. (Original post by Guest132)
What about forgetting units for the other questions?
Ignore that I was actually corrected.

Edexcel don't penalise units
8. physicsmaths Look at the post above, those are the questions. Can you provide solutions for those? No need to wait for the paper.
physicsmaths Look at the post above, those are the questions. Can you provide solutions for those? No need to wait for the paper.
Will do after some breakfast.

Posted from TSR Mobile
10. (Original post by Resonxnce)
Q1(a) - 1/3N ???? Shouldn't it be 1/6N?

Sorry that its sideways, and I forgot the substitute x for 3.
11. Big up, looks like my first 75
12. Goddamn 5b).. That moment when you realize how to do a question right after the exam finishes -___-. Bye Bye first 100%. Anyway, thanks for the solutions physicsmaths
13. (Original post by Euclidean)
Big up, looks like my first 75
I hope i dnt get 74. Will be gutted losing out cause of switching variables by accident. Hopefully i didnt though.
14. (Original post by physicsmaths)
I hope i dnt get 74. Will be gutted losing out cause of switching variables by accident. Hopefully i didnt though.
Nah you'll be fine, going for 75 in S3 too?
15. (Original post by Euclidean)
Nah you'll be fine, going for 75 in S3 too?
na going for 70-80 UMS. going for 75/75 in M4-5 then I am done!
16. For 5b, did you mean to write T2 > 0 not T1>0 ? thank you so much for doing these nice job
17. Does anyone know what the tension inequality should have been in questions 6? The solutions posted say greater/equal to, and obviously the final 'show that' given had the same inequality, but textbooks it just says greater than? Can anyone confirm which one it should be, and if it will be worth a mark in the exam?
18. (Original post by Resonxnce)
Here you go
Thanks dude
19. (Original post by amybould)
For 5b, did you mean to write T2 > 0 not T1>0 ? thank you so much for doing these nice job
Yeh thats correct.

Posted from TSR Mobile

TSR Support Team

We have a brilliant team of more than 60 Support Team members looking after discussions on The Student Room, helping to make it a fun, safe and useful place to hang out.

This forum is supported by:
Updated: August 18, 2016
Today on TSR

Is uni even worth it?

Does anyone use their degree?

Can you die from doing this?

Poll
Useful resources

The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE