Hi! I'm really having a problem understanding this part of statics so please help! In this picture, http://i312.photobucket.com/albums/ll323/IAmMaxwellEdison/Members.jpg, what are the zero force members and how do I identify them? I'm pretty sure that GH, CF, and CD are zero-force members. However, I'm uncertain if EH is a zero force member because load is being applied on point E. Also, are AB and AD zero-force members? because there is the reaction force from the pins so I'm not very sure. Also, is it safe to say that FE is automatically 100N? I'm sorry for asking so many questions, but I'm pretty sure I will be able to understand the concept much easier if these questions were answered. Thanks!