Question

During windstorms, roofs of certain houses are blown off without damaging other parts of the houses.

1. Name the theorem which explains this phenomenon.

2. State the theorem.

3. Explain this phenomenon on the basis of this theorem.

Answer 1

1. Bernoulli’s theorem

2. For a small amount of liquid in stream line flow, between two points, the total energy is constant.

3. When windstorm blown off, the pressure on the top side of roof decreases. Hence a pressure difference is developed in between roof. Due to this pressure difference, roof of certain houses are blown off.