# the moment of inertia of the stool

A solid circular disk has a mass of 1.2 kg and a radius of 0.16m. Each of three identical thin rods has a mass of 0.15 kg. The rods are attached perpendicularly to the plane of the disk at its outer edges to form a three legged stool (simple drawing of a three legged stool provided). Find the moment of inertia of the stool with respect to an axis that is perpendicular to the plane of the disk at its center. (Hint given: When considering the moment of inertia of each rod, note that all of the mass of each rod is located at the same perpendicular distance from the axis.)

Â© BrainMass Inc. brainmass.com March 4, 2021, 8:15 pm ad1c9bdddfhttps://brainmass.com/physics/circular-motion/moment-inertia-stool-155530

#### Solution Preview

A solid circular disk has a mass of 1.2 kg and a radius of 0.16m. Each of three identical thin rods has a mass of 0.15 kg. The rods are attached perpendicularly to the plane of the disk at its outer edges to form a three legged stool (simple drawing of a three legged ...

#### Solution Summary

The solution shows how to calculate the moment of inertia of the stool with respect to an axis that is perpendicular to the plane of the disk at its center.