<prompt> force required to cause occlusion to trachea in hanging ?5kg15kg20kg2kg  <response>: The amount of force required to compress neck structures is estimated as-- jugular vein: 2 kg, carotid aery: 5 kg, trachea: 9 - 15 kg and veebral aery: 3o kg. This implies venous flow is decreased before aerial and airway occlusion For fractures of thyroid cailage lamina: 14.3 kg and cricoid cailage: 18.8 kg force is required. ref : narayana reddy 9th ed 