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[" A bead of mass "m" is located on a pa...

[" A bead of mass "m" is located on a parabolic wire with its axis vertical and "],[" vertex at the oirin as shown in figure and whose equation is "x^(2)=4ay." The "],[" wire frame is fixed in vertical plane and the bead can slide on it without "],[" friction.The bead is released from the point "y=4a" on the wire frame from "],[" rest.The tangential acceleration of the bead when it reaches the position "],[" given by "y=a" is: "],[[" (A) "(g)/(2)," (B) "(sqrt(3)g)/(2)," (C) "(g)/(sqrt(2))," (D) "]]

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