a-roundabout-in-a-park-has-a-diameter-of-34-m-and-is-rotating-freely-at-an-angul

Question

A roundabout in a park has a diameter of 3.4 m and is rotating freely at an angular speed of 0.90 radians per second. The roundabout's total moment of inertia is calculated to be about 1540 kg·m². If three children initially on the ground, each weighing about 55 kg, decide to hop onto its edge, what would be its new angular speed?

Accepted Answer

$$6.9 × 10^{-1 }$$rad/s

Answer

$$1.5 × 10^{-1 }$$rad/s

Answer

$$3.4 × 10^{-1 }$$rad/s

Answer

$$5.5 × 10^{-1 }$$rad/s