I get the answer as 45.9N. I don't know how the actual answer is 34.5N.
(Original post by hassantahir)
Hi, I've just started M2 and the first chapter is driving me nuts. can someone please help me with this question. photo attached. Question 7B, I keep on getting 31.9N as the answer but it is 34.5N. my working is included (even though its most likely wrong). thanks and please include how you got the answer.
You haven't marked the normal reaction from the floor and fence on your diagram.
Last edited by raheem94; 22-02-2012 at 19:18.
Well that the answer at the back:34.5N picture of working?, EDIT: yes i wasnt meant to include it in my photo as the diagram was wrong but the real diagram does include these reaction you have mentioned. have you got the answer?
Last edited by hassantahir; 22-02-2012 at 19:29.
34.5N is the correct answer (34.453125N to be exact).
Your diagram is missing:
A vertical normal reaction at the base of the pole, and also a normal reaction at the point of contact of the fence and pole, this latter reaction will be perpendicular to the line of the pole.
Take moments about the base of the pole of find the normal reaction at the top of the fence, and then resolve horizontally.
Last edited by ghostwalker; 22-02-2012 at 19:54.