Two friends A and B are standing a distance x apart in an open field and wind is blowing from A to B. A beats a drum and B hears the sound t1 time after he sees the experiment is repeated . This time B hears the drum t2 time after he sees the event. Calculate the velocity of sound in still air V and the velocity of wind u.
Asked by valavanvino1011
29th August 2018,
8:12 PM
Answered by Expert
Answer:
when B is hearing the drum beat of A, we have, V+u = (x/t1) .................(1)
when A is hearing the drum beat of B, we have, V-u = (x/t2) ..................(2)
By adding (1) and (2) we get, V = (x/2) [ (1/t1) + (1/t2) ]
By subtarcting (2) from (1), we get, u = (x/2) [ (1/t1) - (1/t2) ]
Answered by Expert
31st August 2018,
11:01 AM
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