A liquid drop of diameter 2 mm and surface tension 70 dy cm^(-1) is sprayed into 1000 identical small droplets. Calculate the work done in the process.

A liquid drop of diameter 2 mm and surface tension 70 dy cm^(-1) is sp

1.	A liquid drop of diameter 2 mm and surface tension 70 dy cm^(-1) is sprayed into 1000 identical small droplets. Calculate the work done in the process.
Answer» Solution :Number of drops n = 1000, diameter of drop d = 2mm, radius of drop r = 1mm = `10^(-1)CM` SURFACE tension T = 70 dyne `cm^(-1)`, WORK done to spray the large drop into SMALL drops W = `4pir^(2)T(n^(1//3)-1)` `rArrW=4xx22/7xx(10^(-1))^(2)xx70[(1000)^(1//3)-1]` `rArrW=4xx22xx10^(-2)xx10xx9rArrW=79.2"ergs".=7.9xx10^(-6)J`.