Question

The figure shows an overhead view of a ring that can rotate about its center like a merry-go-round. Its outer radius R₂ is 0.6 m, its inner radius R₁ is R₂/2, its mass M is 7.4 kg, and the mass of the crossbars at its center is negligible. It initially rotates at an angular speed of 6.5 rad/s with a cat of mass m = M/4 on its outer edge, at radius R₂. By how much does the cat increase the kinetic energy of the cat-ring system if the cat crawls to the inner edge, at radius R₁?

Answer 1

# Moment of inerts of sing 41 BA Isystem (initial) = m (AA) + 1 R2 Isystemen (formal) : (84) + - Now apply Conservation of angular momentom, System (initial), wa Inyate (final) ay = L -> qocrease in ker 3x (6:3)2 22 4k = bulb Tak= 5.76 Joule