Steel particles are ejected from a grinder and fall gently into a tank of kerosene. Determine the largest average diameter of a particle that will float on the kerosene with a contact angle of  =...

Steel particles are ejected from a grinder and fall gently into a tank of kerosene. Determine the largest average diameter of a particle that will float on the kerosene with a contact angle of
 = 180°. Take

_st
= 7850 kg/m³
and
 = 26.8 MN/m. Assume that each particle has the shape of a sphere, where
.