i need a free body diagrams for this project

Fig. 23 A single-sprocket wheel produces rotation in the plane of motion. Carbon steel has a density of 7850kg/m3 Piston is made of the same carbon steel material Friction between piston and cylinder is nepligible Sprocket wheel is made of cast iron with a density of 7200 kg/m3 Chain is made of carbon steel with a density of 7850kg/m+3 Chain tension is constant throughout the stroke Chain and sprocket wheel have a contact area of 100cm22 Chain and sprocket wheel have a coefficient of friction of 0.2 Chain and sprocket wheel have a pitch diameter of 25cm Sprocket wheel has a diameter of 50cm Piston speed is constant throughout the stroke 1. Piston volume: Piston volume = piston area piston stroke Piston volume =(/4)(pistondiameter)n2 piston stroke Piston volume =(3.14159/4)(0.5)20.85=0.067m3 2. Piston weight: Piston weight = piston volume carbon steel density Piston weight =0.067m37850kg/m3=51.69kg 3. Sprocket wheel weight: Sprocket wheel volume =(4/3) (sprocket wheel radius) Sprocket wheel weight = sprocket wheel volume cast iron density Sprocket wheel weight =(4/3)(0.25)37200 kg/m3=164.4kg 4. Chain weight: Chain length = piston stroke x pitch diameter /2 Chain length =0.85m25cm/2=11.875m Chain weight = chain length chain density Chain crosssectional area per meter / 2 Chain weight =11.875m7850kg/m3(1cm)2/2= 619kg