State and prove : Law of conservation of angular momentum.

Explanation

Given : diamter of raindrop `=4mm`, Surface tension of water , `T=0.072N//m`
Atmospheric inside the drop,
`P_(i)=P_(0)+(2T)/(r )`
`=1.013xx10^(5)+(2xx0.072)/(2xx10^(-3))`
`=101300+72`
`P_(i)=1.01372xx10^(5)N//m^(2)`