Parallelogram Of Forces Apparatus 

• The black board is made of wood and fixed within a wooden slotted frame of overall size 75 x 70 
        ems.
• Four friction less pulleys are adjustable in the slots of the frame and the frame is provided with 
        suitable arrangement for fixing it to a wall.
• The unit is complete with four hangers and 16 iron nickel led slotted weights of 50 gms each.

*Note: image shown above is for illustration purpose only; Actual image may vary due to specification, Design, Technology and R&D.*