Consider a toggle clamp subjected to a force of 200 Newton at the handle. What is the vertical clamping force, provided the dimensions of the toggle clamp are known? This system is a machine structure consisting of movable, pin-connected multi-force members that form a stabilized system to transmit forces. Here, member CD is a two-force member. So the collinear forces acting at both ends are equal in magnitude but opposite in direction. A free-body diagram for the section BCF is constructed, and the moment equilibrium condition is applied at the pivot pin B. The result gives the value of the force along member CD. Applying the horizontal force equilibrium condition, the horizontal reaction force at joint B is obtained. Now, considering a free-body diagram for section EBA, the moment equilibrium condition can be applied at joint A. Substituting the value of the horizontal reaction force at B into the moment equilibrium equation, the force acting on the clamping plate at point E is obtained.