Question

A Gipsy car has a canvass top. When the car runs at high speed, the top bulges out. Explain.

Answer 1

Answer: The static pressure of the atmosphere is felt inside the car, but the increased air speed outside the car causes a pressure drop, and that leads to a pressure differential that causes the bulge. Thus, air flows from high top low (from down to top) and makes the gipsy car's canvas top to be bulges out.

Answer 2

The Gipsy car's canvas top is pushed up, as the pressure inside the Gipsy car is higher than the pressure specifically above the Gipsy car.

Explanation:

• It can be described by the principle of Bernoulli which states that the higher the air velocity, the reduced the pressure in this area. The pressure inside the vehicle is ambient because the air inside the car is not moving.
• Since air travels (directly above) outside of the vehicle, the pressure is poor. The Gipsy car's canvas top is pushed up, as the pressure inside the Gipsy car is higher than the pressure specifically above the Gipsy car.

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