3. Consider the following shape with a = 1 ft and b = 3 ft. a. Determine the centroid. b. Determine the moment of inertia about the horizontal centroidal axis Determine the moment of inertia about the vertical centroidal axis. c. a b

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A: The given information in the problem is shown in the following attached image:

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A: As per our guidelines we are supposed to answer only one question. Kindly repost other questions as…

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A: Disclaimer:Hello. Since you have submitted multiple questions, we will solve the first one for you.…

Moment of Inertia

Inertia can be termed as a resistance offered by a body to change its state. A rigid body initially at rest will apply resistance when acted by an external force that tends to change its state of rest or velocity, or a body initially at motion will provide resistance in changing its state of velocity or motion for coming to a state of rest. In other words, Newton's first law of motion describes the law of inertia of a rigid body.