How much force is exerted on the roof?

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If the force is greater than the strength of the roof, it will blow out.In summary, the conversation discusses the effects of a hurricane wind blowing over a flat roof, including the air pressure difference between the roof and inside the house, the resulting force exerted on the roof, and the possibility of the roof blowing in or out. The Bernoulli principle and dynamic pressure are referenced as potential solutions to the problem.
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lindsey4
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Homework Statement


A hurricane wind blows across a 6.0mX15.0m flat roof at a speed of 130 km/h. Is the air pressure above the roof higher or lower than the air pressure inside the house? What is the pressure difference? How much force is exerted on the roof? If the roof cannot withstand the force, will it blow in or out?


Homework Equations



not sure

The Attempt at a Solution


I think you use something like Bernouli's principle but I really have no clue
 
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  • #3
You are looking for the dynamic pressure part of the Bernoulli equation. Pressure=Force/area
 

FAQ: How much force is exerted on the roof?

1. How do you calculate the force exerted on a roof?

The force exerted on a roof can be calculated using the formula F = m x a, where F is force, m is mass, and a is acceleration. The mass of the roof can be determined by measuring its weight, and the acceleration due to gravity is a constant value of 9.8 m/s^2.

2. What factors contribute to the force exerted on a roof?

The force exerted on a roof is affected by several factors such as the weight of the roof, the materials used, the angle of the roof, and external forces such as wind or snow.

3. How does the slope of a roof affect the force exerted on it?

The slope of a roof can affect the force exerted on it by changing the distribution of weight. A steeper slope will distribute the weight more evenly, resulting in less force exerted on each individual point of the roof. A flatter slope will concentrate the weight on a smaller area, resulting in a greater force exerted on that area.

4. Can the force exerted on a roof be determined without physically measuring it?

Yes, the force exerted on a roof can be estimated using structural analysis software. This software takes into account the weight and materials of the roof, as well as external forces, to calculate the force exerted on the roof.

5. What are some safety precautions to consider when dealing with the force exerted on a roof?

When working with roofs, it is important to consider the force exerted on them to ensure safety. Some precautions to take include using proper equipment and techniques when installing or repairing a roof, regularly inspecting the roof for any signs of damage or potential risks, and ensuring that the roof can withstand expected forces such as strong winds or heavy snow.

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