wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A stone is dropped into a well 44m deep and the sound of splash is heard after 3.12sec. find the speed of sound in air (g=9.8m per sec)

Open in App
Solution

First the stone will go 44 meters down and hit the water surface. Then the splash sound will travel in from the water surface to the point from where stone is dropped. The total time taken is 3.12 second.
Let the stone reached the water surface in the well in t second.
s=ut+0.5gt244=0+0.5×9.81×t244=4.905t2t2=444.905=8.97t=8.97=2.99s
Time taken by sound to travel 44m =3.12 -2.99 =0.13s
speed of sound in air =440.13=338.46m/s

flag
Suggest Corrections
thumbs-up
62
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Distance and Displacement
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon