M1 Edexcel Pre-Exam Discussion thread (Tips/Papers/MS) - Please don't merge

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Imagine a triangle shaped surface. 30 degrees angle at one bottom angle so the top angle is 60 degrees. So you would do 2 * the tension (because it's going both ways from the pulley) * cos(90-30/2) (which is 30). That's just basically to find half the angle at the top. Be careful though, if they ask you for the force on the pulley when the slopes are not a right angle shape (e.g an isosceles triangle like a 2d pyramid) then it will just be cos of the angle at the top, not half of it.

Hope that helps.

Yeah that helps, cheers bud. Had the general gist of it but because I hadn't applied it and only came across it this morning ( :biggrin:

) I needed someone to spell it out for me.

Thanks :smile:

And good luck everyone x

Reply 141

reapz

Hi the exam starts at 2pm right? thnx :biggrin:

Reply 142

POWW!

Original post by reapz

Hi the exam starts at 2pm right? thnx :biggrin:

1pm for me

1.30 for me

M1 down and dusted,when can we have discussions?

Reply 145

vishcr7

can we discuss m1 now?

Reply 146

LadySmythe

Just to clear things up as there's been some wrong information given here, you cannot discuss this until 4.30am tomorrow morning as it was an afternoon exam. Everything is explained here: http://www.thestudentroom.co.uk/announcement.php?f=373&a=629

Please make sure you read this and know the rules.