500
It would only take about 30 pounds of pressure per square inch to break a human neck. At 25 pounds of pressure, it causes instant unconsciousness.
It takes about 8 pounds of pressure to break the human jaw
75 pounds of succinct concentrated opposing downward pressure will break almost any human bone
120 pounds
The air pressure inside a human body is roughly equivalent to the pressure of the atmosphere. Normal air pressure is about 13.7 pounds per square inch at sea level.
The adult human body contains an average of fourteen to eighteen square feet of ...
You can't say 'pressure per square inch. It's just 'pressure', which equals force per square inch. You divide the person's weight by the area of the foot in contact with the stairs to get the answer.
780 psi per square cm
The average is seven pounds.
The human arm's weight depends on the age of the human. Children's arms tend to way significantly less than adult's.
It's about 1,000lbs per square inch. A human bite by comparison is 120.
The weight of the atmosphere (which is about 14.5038 pounds per square inch) does not put any pressure on the human spine (the spine is not directly supporting this load form the top of you head to the ground - the pressure is all round you).