International Astronomy and Astrophysics Research Journal

In classical mechanics a mass at rest is supposed to accelerate upwards if it undergoes force greater than its gravity force or greater than its weight, F-W= positive, then the force F is greater than the weight W. In case of a lever a person can lift a mass with force less than its weight but still the force at the other arm on the mass is bigger than the mass weight. The resultant of the forces F-W acting on the mass will be a vector force upwards. In this paper I explain with experimental evidence that a human body uses force less the human body weight to accelerate upwards. The experiment measures the maximum force that a human muscle can exert and shows that this maximum force is less than the human weight and it lifts the human. I also apply this special mass concept to the human body joints including the human spine long term functionality. This theory applies to all living organisms here I focus on the human body specifically.