Decapitation by hanging as means to suicide.

[honkpilleddoomer]

The authors report a case of suicidal hanging resulting in decapitation following a fall of 5m.
The force applied to the neck and the kinetic energy were calculated. The kinetic energy (ranging from 1820 to 7310J) takes into account the weight of the victim but also the length of the rope (height of the fall). The speed of the body as it is stopped by the rope ranged between 6.49 and 14.01ms-1.

Suicidal hanging resulting in decapitation: A case report and review of the literature - PubMed

Decapitation following suicidal hanging is rarely encountered in forensic practice. The authors report a case of suicidal hanging resulting in decapitation following a fall of 5m. This case is compared with 30 cases found in the literature. Several factors including type of rope, skin abrasion...

pubmed.ncbi.nlm.nih.gov

The drop was between four to ten feet (about one to three metres), depending on the weight of the body, and was calculated to deliver an energy of 1,260 foot-pounds force (1,710 J), which fractured the neck at either the 2nd and 3rd or 4th and 5th cervical vertebrae, and resulted in some decapitations.

British drop tables for hanging

Hanged by the neck until dead. The process of judicial hanging

Would tying a long rope to the terrace of a 5 storey building and then jumping off would be enough to decapitate me?
Weight 68kgs 150lbs, height 5'7.

 

[Sunttu1997]

Yes I think so

 

[Worndown]

This is not the most practical method of hanging. The problem is the forces involved.
Will the railing hold once you get to the end of the rope?
Will the rope hold or snap?
If either fail, will the remaining fall kill you?
Sometimes thinking smaller is better.