Tension in the wire connecting two blocks

[harambe]

Homework Statement

Two blocks each having masses of 3.3 kg are connected by a wire CD and the system is suspended from the ceiling by another wire AB.The linear mass density of the wire AB is 10X10^-3kgm^-1 and that of CD is 8X10^-3.The speeds of the transverse waves produced in AB and CD are respectively v1 and v2 .Then find v1 and v2

Homework Equations

The Attempt at a Solution

The tension in the wire CD is 32N but I am slightly confused for the Tension in AB.

For AB, The tension is going to be equal to the weight of the upper block +weight of the second block +weight of the rope+tension at the upper end but I don't know about the weight of the rope and also tension will vary across the rope so How should I proceed here

 

[kuruman]

CD supports the one weight below it and AB supports both weights below it. So what's the tension in AB?

On edit: Since the lengths of the wires are not given, you may ignore their masses for purposes of calculating the two tensions.

 

[TSny]

You can assume that the weights of the wires are negligible compared to the weights of the blocks and you can also neglect the variation in tension between the bottom and top of each wire.

 

[harambe]

That makes things easier then only the weight will act on the upper block

 

[harambe]

If we neglect the tension and mass of rope then it would be 64N

 

[kuruman]

If we neglect the tension and mass of rope then it would be 64N

Yes, that's the tension in the upper wire. More correctly 64.7 N.