A black and white diagram illustrates an egg cracking mechanism with a motor, cranks, coupler link, plunger, and pivoting arms, labeled with forces and components.

Sketch a simplified force diagram of the Instructables egg cracking mechanism, start by drawing the ground frame and a motor with a rotating crank. The crank connects to a coupler link, which transfers force both vertically to a plunger and horizontally to two pivoting arms. As the motor applies torque, the crank rotates, pushing the coupler, which in turn drives the plunger downward to crack the egg. At the same time, the coupler pulls the arms outward to split the shell. Arrows should show the motor torque, the downward force on the plunger, the upward reaction from the egg, and the outward forces on the arms, with reaction forces at the arm pivots. See more