Divers change their body position in midair while rotating about their center of mass. In one dive, the diver leaves the board with her body nearly straight, then tucks into a somersault position. If the moment of inertia of the diver in a straight position is 14 kg m2 and in a tucked position is 4.0 kg m2, by what factor is her angular velocity when tucked greater than when straight?

Consider a dual-propeller airplane circling above an airport. The radius of the airplane's path is 2000 meters and it completes one rotation every 10 minutes. The plane has a mass of 1750 kg and its propellers are spinning at 20b rad/s. The propellers consist of two blades each (approximately cylindrical), each with a mass of 5 kg and a length of 0.2 meters. What is the combined angular momentum of the propellers on the aircraft? 26.6 kg*m^2/s Submit Answer Incorrect. Tries 3/5 Previous Tries Ignoring the propellers, what is the angular momentum of the plane circling the airport? Submit Answer Tries 0/5

In a lab experiment, a student brings up the angular speed of a flywheel to 50 rpm. She then allows the flywheel to slow down on its own and counts 85 revolutions before it comes to a stop. The rotational inertia of the flywheel is 0.095 kg·m². What is the retarding torque on the flywheel? (rpm = rev/min)

Three children are riding on the edge of a merry-go-round that is a disk of mass 96 kg, radius 1.1 m, and is spinning at 22 rpm. The children have masses of 20.4 kg, 26 kg, and 35 kg. M = 96 kgm1 = 20.4 kgm2 = 26 kgm3 = 35 kgr = 1.1 mf = 22 rpm A.  What is the moment of inertia of the merry-go-round plus the children in kg⋅m2?  B.  If the child who has a mass of 26 moves to the center of the merry-go-round, what is the new moment of inertia in kg⋅m2?  C. If the child who has a mass of 26 kg moves to the center of the merry-go-round, what is the new magnitude of angular velocity in rpm?