Massless strings are wrapped around several discs of equal mass. Boxes of varying masses are hung from the strings. If the discs are held static, answer the following questions: (a) (b) (d) y y M M (c) 4 M 3. Which disc experiences the most negative torque about an axis through its center from the hanging mass? (a) M 2r O (e) 2r 3. Which disc experiences the most positive torque about an axis through its center from the hanging mass? 2 M