An Object Consists of a Rod (Of Length 3

question 41

Multiple Choice

An object consists of a rod (of length 3.00 m and negligible moment of inertia) to which four small 3.50-kg masses are attached,one at each end and one at each point on the rod spaced at 1.00-m intervals.The moment of inertia of this object about an axis perpendicular to the rod and through one of the end masses:

• A)is 49 kg·m².
• B)is 21 kg·m².
• C)is 31.5 kg·m².
• D)is 10.5 kg·m².
• E)cannot be uniquely determined until it is stated which inner mass the axis goes through.

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