A string of mass 2.50 Kg is under a tension of 200N . The length of the stretched string is 20.0 m. If the transverse jark is truck at one end of the string, how long does the disturbance take to reach the other end?

One end of a light string is fixed to the celling and the other end is tied to the wall. A body of mass 500 g is suspended from that string in such a way that the part of the string towards the wall remains horizontal and the portion towards the ceiling makes an angle of 30^(@) with the ceiling. Find the tension on the two parts of the string.