(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

http://www.physics.ox.ac.uk/olympiad/Downloads/PastPapers/BPhO_PC_2008_QP.pdf

Question 6

2. Relevant equations

Moment = Force * Distance moved

3. The attempt at a solution

I have tried this and I am sorry to say that I have no idea how to work it out. I think it is something to do with moments but the centre of gravity is not about a pivot so I don't if I should still reference Y from W. Furthermore, since the exact location of W is not known, I can't just use pythagoras to find the distance of Y from W.

Any help would be great, thank you very much.

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# Homework Help: Momentums, Ladder against a wall force

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