Question

When a ring is rolling $V_1, V_2, V_3, V_4$ are velocities of top most point, lowest point, end point of horizontal diameter, center of ring respectively. The decreasing order of these velocities is

• A. $V_2, V_1, V_4, V_3$
• B. $V_2, V_1, V_3, V_4$
• C. $V_1, V_2, V_3, V_4$
• D. $V_1, V_3, V_4, V_2$

Answer 1

Answer: (D)

$V_1, V_3, V_4, V_2$

Answer 2

Let velocity of centre $\begin{array}{l} = V _{0} \\\ V _{4}= V _{0} \\\ V _{1}=2 V _{0} \\\ V _{2}=0 \\\ V _{3}=\sqrt{2} V _{0} \\\ \therefore V _{1}> V _{3}> V _{4}> V _{2} \end{array}$