DESCRIPTION :-
• The device for demonstrating friction (tribometer) consists of a wooden base with dimensions (81.5x10x 2cm), wheel chair with dimensions (10 x 8 x 4cm), 200g, with a small friction roller fixed at one end.
• The plane rests at different angles (0-45) degrees, a standard type metal rack with a base of 50 cm, scales with weighing stones weighing (10.-100) grams, S-shaped holder.