The medical name for blood in the urine is haematuria. If blood in the urine is obvious with the naked eye, it is called macroscopic, or visible haematuria. If the blood can only be detected with laboratory testing, it is called microscopic, or non-visible.
This is not a new kind of force; it is merely force as applied in circular or rotational motion, and it is absolutely essential. Hence, physicists speak of a centripetal force requirement: in the absence of centripetal force, an object simply cannot turn. Instead, it will move in a straight line.
centrifugal force - the outward force on a body moving in a curved path around another body. force - (physics) the influence that produces a change in a physical quantity; force equals mass times acceleration. centripetal force - the inward force on a body moving in a curved path around another body. Translations.