This Parallelogram of Force Apparatus – Stand Type is a practical physics laboratory apparatus used to demonstrate the parallelogram law of forces, polygon law of forces, and equilibrium of concurrent forces. Its stand-mounted design makes it convenient for laboratories where wall fixing is not suitable.

The apparatus is mounted on a sturdy wooden stand and provided with a 12 mm thick plywood board measuring approximately 45 × 30 cm, offering a firm surface for drawing and vector analysis. It allows students to visually represent forces using cords, pulleys, and weights, making vector concepts easier to understand through hands-on experimentation.

Supplied complete with two sets of Z-type pulleys, three sets of slotted weights of 5 × 50 g each, and five drawing sheets. Cord is not included. This apparatus is ideal for schools, colleges, universities, and educational physics laboratories.

Experimental Objectives

To verify the parallelogram law of forces.
To verify the polygon law of forces.
To study the equilibrium of concurrent forces acting in one plane.
To determine the resultant and equilibrant of a system of forces.
To understand vector addition through practical demonstration