A hollow cylindrical rod (rod 1) and a solidcylindrical rod (rod 2) are made of the same material. The tworods have the same length and the same outer radius. If the samecompressional force is applied to each rod, (a) is the change inlength of rod 1 greater than, less than, or equal to the change inlength of rod 2?

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Center of Gravity of a system

The centre of gravity is a property that is based on the geometry of a rigid body or any particle. It is described as an equilibrium point or a hypothetical location where the total weight of the body is concentrated.