You are Here: Home >< Maths

# OCR (non mei) M1 Friday 17th June 2016 Watch

1. (Original post by daniellon)
Cosine rule in the formula booklet?
i got 97.2, you guys sure your not mistaking it for a different answer?
2. (Original post by Snicherz)
forgot to work on time on question 1 , 2 marks off?

(also what was the question on the contact force asking?)
It was just asking you to isolate P as a single component and then calculate the contact force exerted on it by the plane. So you just had to use R and F (which I think you establish in the part of the q before this) and then use pythagorus.
3. (Original post by Furthermaths100)
You are wrong, put one of the forces due north, and the other with 97.18 and resolve to get the resultant and it won't be 6N.
4. (Original post by Mattyreds999)
Would you mind explaining how you got this answer?
5. (Original post by Mattyreds999)
please can you explain to me how I'm wrong in my solution>>>??
6. (Original post by G_8)
Would you mind explaining how you got this answer?
you have two forces acting on a particle, top to tail them, work out angle in-between them using cosine rule seeing as you know a 3 sides
7. (Original post by duncanjgraham)
please can you explain to me how I'm wrong in my solution>>>??
To be honest man, it was like a 2 mark question for that part, from the amount of working you needed to do, thats a slight hint that you may have over complicated it. who knows, maybe its right, my gut tells me that 97.2 was right though. we'll just have to see
8. (Original post by Mattyreds999)
To be honest man, it was like a 2 mark question for that part, from the amount of working you needed to do, thats a slight hint that you may have over complicated it. who knows, maybe its right, my gut tells me that 97.2 was right though. we'll just have to see
it was more than 2, i think 3. I've done it in a slightly unconventional way that's all.
9. (Original post by Mattyreds999)
if you put one due north and the angle between this 4n force and the other as 97.18 degrees and then use cosine rule. you will find the reultant to be six my friend
10. (Original post by Mattyreds999)
The answer cannot be 97.18 as it does not work if you resolve the forces to get the resultant force. Put one of the 4N forces vertical and the other at 97.18, resolve and you will get a vertical as 4-4sin7.18= about 3.5, and horizontal (which is correct either way) as 4cos7.18 which is about 3.96N. Are you therefore saying 3.5^2 + 3.96^2 equals 36? (6^2)
Do the maths, it doesn't work! The answer is 100% 82.8.
11. (Original post by Furthermaths100)
The answer cannot be 97.18 as it does not work if you resolve the forces to get the resultant force. Put one of the 4N forces vertical and the other at 97.18, resolve and you will get a vertical as 4-4sin7.18= about 3.5, and horizontal (which is correct either way) as 4cos7.18 which is about 3.96N. Are you therefore saying 3.5^2 + 3.96^2 equals 36? (6^2)
Do the maths, it doesn't work! The answer is 100% 82.8.
12. How did people generally find that exam? easy, hard or average?
13. (Original post by gmanijn592)
How did people generally find that exam? easy, hard or average?
Tricky in places, probably slightly harder than normal.
14. Okay good, I want to know what the grade boundaries would be like, i think I dropped like 7-8 marks
15. (Original post by gmanijn592)
Okay good, I want to know what the grade boundaries would be like, i think I dropped like 7-8 marks
I think 57 for an A
16. (Original post by gmanijn592)
How did people generally find that exam? easy, hard or average?
It was harder than the average M1 exam. Haven't seen any marks I've dropped yet though
17. How many marks overall do you guys think I will need to get for an A in maths?
18. Was alright, harder than usual. I'm guessing about 54-55 for an A?
19. (Original post by Flytrap1190)
Was alright, harder than usual. I'm guessing about 54-55 for an A?
I'm gonna guess 56
20. (Original post by klosovic)
I'm gonna guess 56
Hm i found it harder than the 2014 one, and that was 55 for an A

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: June 21, 2016
Today on TSR

### Medicine offers rolling in

Which unis have sent theirs?

### I hate Christmas

Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• Poll
Useful resources

Can you help? Study help unanswered threadsStudy Help rules and posting guidelinesLaTex guide for writing equations on TSR

## Groups associated with this forum:

View associated groups
Discussions on TSR

• Latest
• ## See more of what you like on The Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

• 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

Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.