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

# Edexcel - M3 - 18th May 2016 watch

1. (Original post by Foutre en L'air)
Doing them all, yup!
I haven't sat any FM yet so I just need the normal for the A*
Just get a decent UMS like a C or B then smash the other modules for he A*!

Posted from TSR Mobile
2. I anyone else just quickly relearning all topics (refreshing it) and then using the physicsmathstutor booklets with past paper questions for each topic?
3. (Original post by Foutre en L'air)
I anyone else just quickly relearning all topics (refreshing it) and then using the physicsmathstutor booklets with past paper questions for each topic?
I prefer to just smash through some past papers
4. (Original post by Foutre en L'air)
I anyone else just quickly relearning all topics (refreshing it) and then using the physicsmathstutor booklets with past paper questions for each topic?
Imo past papers is the best way to go about it...
5. (Original post by Foutre en L'air)
Who else feels f****d for this so far?
(Original post by Foutre en L'air)
I anyone else just quickly relearning all topics (refreshing it) and then using the physicsmathstutor booklets with past paper questions for each topic?
Me lol. I've been struggling with M3 until last week, which I started to go through the book.
I love those booklet so much, sinxe it means I can just focus on my weak areas
6. Could someone look at qu 2 on this paper:

https://8a40d6c38bafca75cc407741c0f3...%20Edexcel.pdf

Surely if the particle is moving and being accelerated towards the centre of the earth, there is no need for a negative sign. However the markscheme adds a negative sign which leads to mgR^2/x^2 = -ma
7. (Original post by J.M.Keynes)
Could someone look at qu 2 on this paper:

https://8a40d6c38bafca75cc407741c0f3...%20Edexcel.pdf

Surely if the particle is moving and being accelerated towards the centre of the earth, there is no need for a negative sign. However the markscheme adds a negative sign which leads to mgR^2/x^2 = -ma
Define x as positive the further away it is from earth define a in the same direction. I always do them this way and never get them wrong. Note a=-g at surface and not +g.

Posted from TSR Mobile
8. (Original post by physicsmaths)
Define x as positive the further away it is from earth define a in the same direction. I always do them this way and never get them wrong. Note a=-g at surface and not +g.

Posted from TSR Mobile
Ok, I think it get it😀
9. Does anyone know whether we are allowed to draw forces on the diagrams they give us and then refer to them in the question or do we always have to draw our own diagrams
10. (Original post by J.M.Keynes)
Does anyone know whether we are allowed to draw forces on the diagrams they give us and then refer to them in the question or do we always have to draw our own diagrams
You can use the given diagram. Don't bother drawing a new one unless you really have to
11. Is this working acceptable? June '12 Q4b)

Attachment 530405530407

Attached Images

12. Also how do you prove the COM of a conical shape?
13. What unit does angular speed need to be in? Is it rad/s?
Also how do you prove the COM of a conical shape?
Assuming that you mean a solid cone, use the standard formula for the volume of a solid, using the line y = rx/h

This gives the distance from the vertex.
15. Does anyone have any tips in getting an A in M3? So far I've managed to move from a U to a B in a week, but can't seem to get into the next grade
16. (Original post by kkboyk)
Does anyone have any tips in getting an A in M3? So far I've managed to move from a U to a B in a week, but can't seem to get into the next grade
If you understand the content, do as many papers as you can - so many of the questions are recycled year after year
17. (Original post by samb1234)
If you understand the content, do as many papers as you can - so many of the questions are recycled year after year
I'm planning on starting past papers from Jan 2002 tomorrow. Also how would you go about solving vertical circle questions in which a particle leaves the circle?
18. (Original post by kkboyk)
I'm planning on starting past papers from Jan 2002 tomorrow. Also how would you go about solving vertical circle questions in which a particle leaves the circle?
Leaves when R=0, then it's just a projectile question
19. (Original post by kkboyk)
Also how would you go about solving vertical circle questions in which a particle leaves the circle?
Assuming your reaction force/tension is in terms of an arbitrary angle, it's just T = 0 (when string goes slack - won't happen for a rod) or R = 0. June 13 and June 13 R is are good examples.

Could you do me a favour and tell me which ones between 2002 and 2005 are worth doing once you get started, if it's not too much trouble?
20. (Original post by samb1234)
If you understand the content, do as many papers as you can - so many of the questions are recycled year after year
How many papers u done?

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

### I've studied the wrong subject

...Should I go back to school?

### Should I complain about my supervisor?

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

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