CIE 525 Lecture Notes - Lecture 15: Free Body Diagram, Hydraulic Cylinder, Net Force
Document Summary
Draw a free body diagram using reaction notation. Apply equations of equilibrium to solve for unknowns. Identify support reactions in 3-d and draw a free body diagram. A steel beam is used to support roof joists. In contrast to the forces on a particle, the forces on a rigid-body are not usually concurrent and may cause rotation of the body (due to the moments created by the forces). Procedure for drawing a free body diagram (section 4. 2) Show all the external forces and couple moments. Other support reactions are given in your textbook (in table 4-1 page 160-161). A free body diagram of the foot pedal. Smooth points of contact at a, b, and c. A and the hydraulic cylinder bc (treat as a short link). A body is subjected to a system of forces that lie in the x-y plane.