- Children On A Merry Go Round Points 40 Two Children Each With Mass M 10 5 Kg Sit On Opposite Ends Of A Narrow Board 1 (82.88 KiB) Viewed 28 times
Children on a Merry-Go-Round Points:40 Two children, each with mass m = 10.5 kg, sit on opposite ends of a narrow board with length L = 4.3 m, width W = 0.15 m, and mass M = 6.9 kg. The board is pivoted at its center and is free to rotate in a horizontal circle without friction. What is the rotational inertia of the board plus the children about a vertical axis through the center of the board? Submit Answer Tries 0/40 What is the magnitude of the angular momentum of the system if it is rotating with an angular speed of 1.07 rad/s? Submit Answer Tries 0/40 While the system is rotating, the children pull themselves toward the center of the board until they are half as far from the center as before. What is the resulting angular speed? Submit Answer Tries 0/40 What is the change in kinetic energy of the system as a result of the children changing their positions? Submit Answer Tries 0/40 Post Discussion Send Feedback