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# Official M4 Edexcel Thread – Wednesday 15th June 2016 watch

1. (Original post by Cryptokyo)
So you did M3 on 18th of May?
Nope - college didn't allow me to - self-studying next year - being held back quite a bit tbh. Having more modules does help and I know it has for the many people I've spoken to.
2. Wow you people here must be really really smart! Having to go through that monstrosity of a module that is M3, I can't even comprehend how M4 must be like!
3. Guys. ex 4b qs 5 part d. with the given description. solution bank took the speed at t=0 as 0 whereas the book took the speed as 5. which is correct?
4. In general, can we take any point on the system to be the level of zero potential provided no forces act directly at that level?

I've taken the apex of a system to be the level of zero potential but my equation for V is incorrect...
5. (Original post by Euclidean)
In general, can we take any point on the system to be the level of zero potential provided no forces act directly at that level?

I've taken the apex of a system to be the level of zero potential but my equation for V is incorrect...
Whats the question?

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6. (Original post by physicsmaths)
Whats the question?

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January 2004 Q3

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7. (Original post by Euclidean)
January 2004 Q3

Do you mean the horizontal through A? I think it's because it's not always going to stay in that position. As theta changes so does the height of A from BC. So I think BC in the only option.
8. (Original post by Pyslocke)
Do you mean the horizontal through A? I think it's because it's not always going to stay in that position. As theta changes so does the height of A from BC. So I think BC in the only option.
Yeah I did. That makes a lot of sense

Thanks a lot!
9. (Original post by Euclidean)
January 2004 Q3

We take GPE about fixed positions so it doesn't work. About there. Bit late

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10. (Original post by physicsmaths)
We take GPE about fixed positions so it doesn't work. About there. Bit late

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Thanks though, appreciate it

Confident for M4 yet?
11. (Original post by Euclidean)
Thanks though, appreciate it

Confident for M4 yet?
Yep its going good. Shud get 90+z

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12. guys. qs 2a from the books past exam paper. would it answer the question if we showed that it's light damping?

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13. (Original post by ChuckNorriss)
guys. qs 2a from the books past exam paper. would it answer the question if we showed that it's light damping?

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I assume that's what they want you to do
14. Good luck for M4 guys - smash it. physicsmaths Euclidean and of course man like EnglishMuon
15. (Original post by Marxist)
Good luck for M4 guys - smash it. physicsmaths Euclidean
Cheers
16. (Original post by Marxist)
Good luck for M4 guys - smash it. physicsmaths Euclidean and of course man like EnglishMuon
haha thank you! Also I didnt even realise there was an M4 thread so thanks for pointing it out to me
17. (Original post by EnglishMuon)
haha thank you! Also I didnt even realise there was an M4 thread so thanks for pointing it out to me
Feeling prepared?
18. (Original post by Euclidean)
Feeling prepared?
Yep, hopefully! Its next wednesday isnt it?
19. (Original post by EnglishMuon)
Yep, hopefully! Its next wednesday isnt it?
Yeah next Wednesday AM

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20. Is this the best method to show that two objects cannot intercept eachother?

I think trying to equate position vectors is a little more complicated, I probably wrote more lines than necessary for this too

Tagging physicsmaths cause I heard he's got sik geometry skills

Tagging A Slice of Pi cause mechanics wizard

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