101. The speed of rolling of a ring of mass M changes from V to 3V. What is the change in its kinetic energy
(a) 3MV2
(b) 4MV2
(c) 6 MV2
(d) 8MV2
Ans. d
(414)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)