Bell Crank Lever Apparatus

Constructed as a wooden right-angled lever with the fulcrum positioned at the vertex.

Horizontal arm length: 75 cm 

Vertical arm length: 20 cm

The lever is marked with a scale grooved at every 5 cm for precise measurement of force application points.

 A spring balance is attached to the shorter (vertical) arm and comes with an adjustable wing nut for calibration and position adjustment.

The apparatus includes one no. 1 kg sliding weight for applying force on the horizontal arm.

This setup helps students visually and practically verify the law of the lever and explore how force is transferred through angular levers.