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

http://tinypic.com/r/2wbxm2s/7

This is a series of beams pinned together at A, B, C

Find reactions at a b c

2. Relevant equations

Sum of moments at B has to = 0, sum of Fx = 0, sum of Fy = 0

3. The attempt at a solution

Sum of moments about A, anti clockwise +ve

2(-16) + 8Cy -4Cx = 0

considering section BC

sum of momeents about B

4*-25 + 4Cy -8Cx= 0

solving ffor Cx = 61.33

I've been staring at this question all day, it has literally stopped making any sense.

**Physics Forums | Science Articles, Homework Help, Discussion**

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Three pinned arch/ beams

**Physics Forums | Science Articles, Homework Help, Discussion**