1. The problem statement, all variables and given/known data Please refer to the image. 2. Relevant equations Sum of clockwise moment=sum of anticlockwise moment 3. The attempt at a solution I had drawn out the force diagram and listed out the information required. The question asks me to find force acting by the support B. I troubled myself by taking moments about A and multiplying every forces with their respective distances from A. However the answer was simple, they just added all other forces together, 33 + 4.4 + 129 = 166N. I can't figure out where is the pivot. Or is there even a pivot? What's the theory behind this calculation?