A) disc
B) sphere
C) cylinder
D) ring
Correct Answer: D
Solution :
\[{{K}_{rot}}=K\] \[\frac{1}{2}I{{\omega }^{2}}=\frac{1}{2}m{{v}^{2}}=\frac{1}{2}M{{R}^{2}}{{\omega }^{2}}\] \[I=M{{R}^{2}}\] Therefore, body is a ring.
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