A transverse wave pulse starts propagating in the +x direction along a non-uniform wire of length (2m) under tension 9N. The mass per unit length of wire varies as m = 4x 2 kg, where x is measured from the lighter end of the wire as shown. Find the time (in seconds) taken by the pulse to reach to the heavier end of the wire, it is starts travelling from lighter end A towards heavier end B.
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