One end of a steel wire is attached to a fixed support. The other end passes ove

Question

One end of a steel wire is attached to a fixed support. The other end passes over a pulley and supports an object of mass 6 kg. The length of the wire between the pulley and the fixed support is 5 m and the mass of the wire is 50 g.

(a) If the wire is struck with a transverse blow at one end, how long does it take for the resulting distrbance to reach the other end?

(b) Suppose the blow creates a triangular pulse of height 5 cm and width 20 cm. What will be the maximum transverse speed of the wire (dy/dt where y is in the vertical direction) as the pulse moves down its length?

Explanation / Answer

a.

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