Question 9: A half uniform annulus of inner and outer radii R1 and R2 has a non- uniform surface mass density given by o = 0or where oo is a positive constant and r is the radial distance from the origin (radial coordinate in the cylindrical coordinates) as shown in Figure 6. Find i) the mass of the half annulus, and ii) the position of the center of mass, i.e., (xem, Yem) the center of mass in terms of R1 and R2.

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Question 9: A half uniform annulus of inner and outer radii R1 and R2 has a non-
uniform surface mass density given by o = oor where oo is a positive constant and r
is the radial distance from the origin (radial coordinate in the cylindrical coordinates)
as shown in Figure 6. Find
i) the mass of the half annulus, and
ii) the position of the center of mass, i.e., (xem, Yem) the center of mass in terms of
R1 and R2.
R2
M
Figure 6
Transcribed Image Text:Question 9: A half uniform annulus of inner and outer radii R1 and R2 has a non- uniform surface mass density given by o = oor where oo is a positive constant and r is the radial distance from the origin (radial coordinate in the cylindrical coordinates) as shown in Figure 6. Find i) the mass of the half annulus, and ii) the position of the center of mass, i.e., (xem, Yem) the center of mass in terms of R1 and R2. R2 M Figure 6
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