T 2 I 13. (Two objects of equal mass in are tied to a string and placed on a horizontal frictionless tabletop. The string and objects spin with angular velocity so that the objects move in circles of radius and r, , as shown above. The tensions 7, and To must satisfy which of the following relations? (A) I - T2 = man (B) T, - T = ma-r (C) I + 2 = marz (D) Ti+ 12 = mar (E) T = T