3. A uniform sphere of radius R has a spherical hole of radius R/2 removed. The center of the sphere and the hole are located at x = 0 and x = -R/2, as shown in the figure. Where is the center of the mass of this system?
(A) x = 0
(B) x =
R
(C) x =
R
(D) x =
R
(E) x =
R
(A) x = 0
(B) x =
R (C) x =
R (D) x =
R (E) x =
R
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統計: 尚無統計資料
統計: 尚無統計資料