How long does it take typical inelastic rope to stop a person in freefall? I'm taking a gun-safety course and the instructor claims that for a 200lb person falling 1 meter out of a tree stand before their safety harness halts their fall, it applies a force of 1700 pounds to the body. I feel that that estimate is a bit high, but it all comes down to the length of time the stop is spread out over. I calculate that for a rope to apply 1700 pounds of force on the body after a 1 meter fall, the stop must last only 0.053s. If you increase that time to just 0.1s, the force drops significantly to 903lbs, or 4018.2Newtons. What is a good estimate? Any thoughts?