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a uniform rope 15m long of mass 30 kg hangs vertically from a rigid support . A mass of 2 kg is attached to the lower end . If a pulse of wavelength 1.5 cm is produced at the lower end , then the wavelength of the wave 3m from the lower end will be?
Daer Utkarsh,
Let m = mass of the rope ;
l = length of rope.
tension at a distanc x = weights of length (l-x) + wt of block
tension = mg/l *(l-x) + wtof block.
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