An Object Consists of a Rod (Of Length 3

question 53

Multiple Choice

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.