The acceleration resulting from the centrifugal force is, according to the familiar formula, the square of velocity divided by the radius of curvature. Applying this formula to a centrifuge wall radius of 10 cm driven by a speed of 200 m / sec (19,000 rpm), the centrifugal acceleration experienced by the wall is 400 000 (m / sec 2), or about 40,000 times the acceleration due to gravity (9.81 m / sec2).