146.Two uniform similar discs roll down two inclined planes of length S and 2S respectively as shown is the fig. The velocities of two discs at the points A and B of the inclined planes are related as
(a) v1 = v2
(b) v1 =2v2
(c) v1 = v1 (v2/4)
(d) v1 =( 3/4) v2
Ans. a
(71)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)