A piece of machinery with a moment of inertia of 2.5 kg-m? rotates with a constant angular speed of 4.0
rad/s. A bolt loosens, causing a part of it to shift outward from the rotation axis, increasing the moment
of inertia by 1.0 kg-m². What would the new angular speed of the machinery be? (hint: Conservation
of momentum) 10 rad/s