Review. The ratio of the number of sparrows visiting a bird feeder to the number of more interesting birds is 2.25. On a morning when altogether 91 birds visit the feeder, what is the number of sparrows?

Chapter 13 In translational motion the more massive particle has the most rotational inertia Mass distribution with respect to the rotational axis also impacts rotational inertia; the farther away the mass is from the rotational axis the more rotational inertia will exist. Rotational inertia can be found by: n 2 I= ∑ m i i i=1 M is the mass of the particle r is the distance from the rotational axis The rotational inertia on a continuous object such as a bicycle wheel is: