Fizziq//Astronauts and spinners//In the film The Right Stuff, the astronauts are subjected to stress tests. Try to understand these tests with a salad spinner//To be sure that the astronauts withstand high accelerations, they are subjected to the centrifuge test//In this test, a capsule in which the astronaut is fitted turns faster and faster around an axis until he passes out or asks to stop//A human who is not trained supports an acceleration of 4 to 6 g, i.e. 4 to 6 times its weight. An astronaut can support up to 12 g//With the help of your smartphone and a salad spinner, can you reproduce a centrifuge and measure the maximum acceleration to which you can submit your mobile?//Don't forget to pack your smartphone well!//Would an astronaut have survived if it were instead of your smartphone in the basket?//Can you calculate and verify experimentally the rotation speed of the spinner's basket for this acceleration?//If the basket is larger, but spins at the same speed, will the acceleration be greater or less?//What do you infer about the design of a centrifuge?