Part 1 of 4 - Conceptualize: Look carefully at the figure and imagine you are the astronaut sitting in the seat at the far right. As the centrifuge rotates, you are experiencing an acceleration toward the center of the device. The faster the centrifuge spins, the larger is that acceleration. The problem is asking for a rotation rate, measured in revolutions per second. Because the period of circular motion is the number of seconds per revolution, we see that the rotation rate will be the inverse of the period. rotation rate = Part 2 of 4 - Categorize: (1) What analysis model correctly describes the motion of the astronaut while the centrifuge is operating at a fixed rotation rate, and will be most helpful in solving this problem? particle under constant speed particle under constant velocity ] particle in uniform circular motion particle under constant acceleration none of the above Correct. This model correctly describes the motion of the astronaut. Part 3 of 4 - Categorize: (cont.) The following two equations are associated with the particle in the uniform circular motion model. 2ar (2) Combine these two equations to obtain an expression for the rotation rate of the centrifuge, . Choose the correct answer below. 4x2r 4x?r

Part 1 of 4 - Conceptualize: Look carefully at the figure and imagine you are the astronaut sitting in the seat at the far right. As the centrifuge rotates, you are experiencing an acceleration toward the center of the device. The faster the centrifuge spins, the larger is that acceleration. The problem is asking for a rotation rate, measured in revolutions per second. Because the period of circular motion is the number of seconds per revolution, we see that the rotation rate will be the inverse of the period. rotation rate = Part 2 of 4 - Categorize: (1) What analysis model correctly describes the motion of the astronaut while the centrifuge is operating at a fixed rotation rate, and will be most helpful in solving this problem? particle under constant speed particle under constant velocity ] particle in uniform circular motion particle under constant acceleration none of the above Correct. This model correctly describes the motion of the astronaut. Part 3 of 4 - Categorize: (cont.) The following two equations are associated with the particle in the uniform circular motion model. 2ar (2) Combine these two equations to obtain an expression for the rotation rate of the centrifuge, . Choose the correct answer below. 4x2r 4x?r