A I shaped sheet of uniform thickness has a uniform mass density. Is the center

Question

A I shaped sheet of uniform thickness has a uniform mass density. Is the center of mass of the sheet located above point R. below point R. or at point R? Explain your 1L reasoning. (Hint: Do not assume that this board is identical to the one used in the tutorial Equilibrium of rigid bodies.) AL Now consider a T-shaped sheet of uniform thickness that is composed of two different materials designated by the shaded and unshaded regions in the diagram at right. The mass density of each piece is uniform throughout its volume. The mass density of the 2L shaded piece is twice as large as the mass density of the unshaded piece. Is the center of mass of the sheet located above point R. below point R. or at point R? Explain your reasoning. 4 L

Explanation / Answer

a. above R

b. at R.

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