Human centrifuges are used to train military pilots and astronauts in preparation for high-g maneuvers. a trained, fit person wearing a g-suit can withstand accelerations up to about 9g (88.2 m/s2) without losing consciousness. (a) if a human centrifuge has a radius of 4.50 m, what angular speed results in a centripetal acceleration of 9g? (b) what linear speed would a person in the centrifuge have at this acceleration? 21. a 55.0-kg ice skater is moving at 4.00 m/s when she grabs the loose end of a rope, the opposite end of which is tied to a pole. she then moves in a circle of radius 0.800 m around the pole.(a) determine the force exerted by the horizontal rope on her arms. (b) compare this force with her weight. 22.ta 40.0-kg child swings in a swing supported by two chains, answer to part (d) long. the tension in each chain at the lowest at the lowest point each 3.00 m point is 350 n. find (a) the child's speed and (b) the force exerted by the seat on the child at the lowest point. (ignore the mass of the seat.) b t 23. a certain light truck can go around a flat curve having a radius of 150 m with a maximum speed of 32.0 m/s. with what maxi- speed can it go around a curve having a radius of 75.0 m 24. bio a sample of blood is placed in a centrifuge of radius 15.0 cm. the mass of a red blood cell is 3.0 x 1016 kg, and the magnitude of the force acting plasma is 4.0 x 10 n. at how many revolutions per second should the centrifuge be operated? mum on it as it settles out of the unless otherwise noted, all content on this page is @ cengage learning