An object consists of a rod (of length 3.0 m and negligible moment of inertia)to which four small 2.0-kg masses are attached,one at each end and one at each point on the rod 1.0 m from each end.(The masses are one meter apart. )The moment of inertia of this object about an axis perpendicular to the rod and through one of the end masses: A) is 28 kg·m². B) is 12 kg·m². C) is 4 kg·m². D) cannot be uniquely determined until it is stated which inner mass the axis goes through.

Question

Quizplus · Accepted Answer

The moment of inertia is calculated by summing the products of each mass and the square of its distance from the axis. For the given configuration, the distances are 0 m, 1 m, 2 m, and 3 m, resulting in a total moment of inertia of 28 kg·m².

An Object Consists of a Rod (Of Length 3