74. A disc is rotating with an angular speed of ω. If a child sits on it, which of the following is conserved
(a) Kinetic energy
(b) Potential energy
(c) Linear momentum
(d) Angular momentum
Ans. d
(11)
5/5 - (1 vote)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (118)
(a) 34 J (b) 70 J (c) 84 J (d) 134 J Answer-d (202)