This preview shows page 1. Sign up to view the full content.
Unformatted text preview: stable or not stable? 3. A water droplet falling in the atmosphere is spherical. Assume that as the droplet passes through a cloud, it acquires mass at a rate proportional to kA , where k is a constant ( k > 0) and A is its cross-sectional area. Consider a droplet of initial radius r that enters a cloud with a velocity v . Assume no resistive force and show (a) that the radius increases linearly with the time, and (b) that if r is negligibly small the the speed increases linearly with the time within the cloud. 1...
View Full Document
- Fall '08