In a cyclone separator of radius $25 \mathrm{~cm}$, a particle is travelling with a gas stream at velocity of $18 \mathrm{~m} / \mathrm{s}$. The ratio of centrifugal force to the gravitational force acting on the particle is __________ $\text{(rounded off to 2 decimal places)}$.
Consider acceleration due to gravity (g) as $9.8 \mathrm{~m} / \mathrm{s}^{2}$.
