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M2 moments and ladder question help!

sefulK

I don't know how to even start part ii

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Reply 1

brianeverit

Original post by sefulK

I don't know how to even start part ii

Posted from TSR Mobile

Find normal reaction at foot of ladder then take moments aboput the top of the ladder.

Reply 2

ghostwalker

Original post by sefulK

I don't know how to even start part ii

Hopefully it's clear that F increases as x increases.

For the woman to stand anywhere, the frictional force must be less than Fmax (=muR) for all positions of the woman, i.e. all values of x possible on the ladder. In particular the maxium value F could be must be less than Fmax.