The given Parallelogram of Forces Apparatus – Wall Type is a reliable physics laboratory apparatus used for demonstrating vector addition, force equilibrium, and the laws of forces in a clear visual manner. Its wall-mounted design saves bench space and provides a stable setup for repeated classroom demonstrations.

The apparatus consists of a sturdy 45 × 30 cm black-painted board fitted with metal brackets for secure wall mounting. The board provides sufficient clearance around the edges, allowing easy placement and adjustment of pulleys during experiments. This arrangement helps students observe how multiple forces acting at a point can be represented and balanced using vectors.

Supplied complete with two sets of Z-type pulleys, three sets of slotted weights of 5 × 50 g each, and five drawing sheets, this apparatus is suitable 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 at a point.
To determine the resultant and equilibrant of a system of forces.
To understand vector representation of forces through practical demonstration.