The flywheel of a hand operated chaff cutter with 4 cutting knives is rotated at 60 rpm and is connected to worm gear assembly for rotating feed rollers. The number of teeth and threads of worm gear and worm are 20 and 2 respectively. What would be the chaff length? (Diameter of feed roller is 15 cm)

A chaff cutter is a mechanical device that cuts hay and straw into small pieces. These pieces are then mixed with other forage and fed to cattle and horses. This helps with digestion and prevents animals from rejecting any part of their food. 

Chaff cutters have several advantages, including:
Energy-efficient
Saves time and human resources
Wear-resistant
Hardened cutting blade
Multipurpose
Made from high-quality materials and have a long life expectancy 

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