Two equal drops of water are falling through air with a steady volocity of 10 cm//s. If the drops recombine to form a single drop what would be their terminal velocity ?

Two equal drops of water are falling through air with a steady volocit

1.	Two equal drops of water are falling through air with a steady volocity of 10 cm//s. If the drops recombine to form a single drop what would be their terminal velocity ?
Answer» SOLUTION :` V prop r^(2), v_1 //v_2= r^(2) //R^(2) , 2 XX (4//3) pi r ^(3)= (4//3)pi R^(3),( 8//R)^(2)= 1//(2)^(2//3)` ` V_2 =v_1 (R//r)^(2)= 10 xx 2 ^(2//3)= 15. 9cm //s = 0.16 m//s `