Why do water droplets in cloud do not fall and continue to float although the density of is more than the density of air ?

Explanation

To understand why water droplets in clouds do not fall despite having a greater density than air, we can break down the explanation into the following steps:

### Step-by-Step Solution:

1. **Understanding the Concept of Terminal Velocity**:
- Terminal velocity is the constant speed that a freely falling object eventually reaches when the resistance of the medium prevents further acceleration. For a water droplet in air, the terminal velocity can be calculated using the formula:
\[
v_t = \frac{2 r^2 g (\rho_w - \rho_a)}{9 \eta}
...