Edexcel A Level Further Mathematics Paper 3C (9FM0 3C) - 7th June 2024 [Exam Chat]

Edexcel A Level Further Mathematics Paper 3C (9FM0 3C) - 7th June 2024 [Exam Chat]

Welcome to the exam discussion thread for this exam. Introduce yourself! Let others know what you're aiming for in your exams, what you are struggling with in your revision or anything else.

Wishing you all the best of luck.

General Information
Date/Time: 7th June 2024/ PM
Length: 1hr 30 mins

Resources:
Edexcel A Level Further Mathematics

Reply 1

sorince

Hello ,
I have done this question and got the correct answer however, i used physics knowledge E=1/2Fe in order to get the answer .
Would i be panelised for it?

Reply 2

mqb2766

Original post by sorince

Hello ,
I have done this question and got the correct answer however, i used physics knowledge E=1/2Fe in order to get the answer .
Would i be panelised for it?

It sounds the obvious way to do the question and fm does cover elastic energy so its on the spec. Writing EPE as 1/2*tension*extension is just a simple substitution.

(edited 1 week ago)

Reply 3

sorince

Original post by mqb2766

It sounds the obvious way to do the question and fm does cover elastic energy so its on the spec. Writing EPE as 1/2*tension*extension is just a simple substitution.

I get what you are saying but I've never come across 1/2* tension*extension on any mark scheme or even in the content book

Reply 4

mqb2766

Original post by sorince

I get what you are saying but I've never come across 1/2* tension*extension on any mark scheme or even in the content book

Id not overthink it. The question seems 10 easy marks approached the right way, so tension=50 (3:4:5 - pythagoras) and epe = 10=1/2*50*e, so length=0.9.

EPE is essentially work done so the integral of force wrt distance. So thinking of it as 1/2*tension*extension is arguably closer to the definition than the usual form of 1/2Ke^2. You could have solved for both K and e using the tension and energy equations, though thats simpy unnecessary for the question.