Product Details

This apparatus is designed to study the principles of moments and mechanical advantage in a bell crank lever system, allowing students to determine the relationship between applied load, reaction force, and leverage ratio. It demonstrates how a force can change direction by 90 degrees while amplifying or reducing its magnitude based on the lengths of the lever arms. The unit features a sturdy steel base frame with a 90-degree bell crank lever pivoted on a central pillar. The lever includes five rings at varying distances from the pivot point to hang load hangers, enabling experimentation with different mechanical advantages. A horizontally mounted spring balance measures the reaction force generated when a load is applied, providing direct data on how the leverage ratio affects the system. Its primary application is in mechanical engineering education for teaching fundamental concepts of statics and machine dynamics. The key benefit is the hands-on investigation of moment calculations and leverage, enabling students to verify theoretical principles, understand the function of bell cranks in real-world mechanisms like automotive brakes and aircraft controls, and grasp how mechanical advantage is achieved through simple machine design.