Forces on the top of a bullet train

In summary, The purpose of studying forces on the top of a bullet train is to understand how these forces affect the train's stability, speed, and safety. The main forces acting on the top of a bullet train include air resistance, gravity, and friction. These forces can both positively and negatively affect the speed of a bullet train. Engineers use innovative designs and materials to minimize the impact of forces on the top of a bullet train, and it is essential for them to carefully consider these forces to ensure the safety of passengers.
  • #1
cbram
6
0
Can anyone tell me what is the air resistance on the top of a bullet train when it is moving at top speed
 
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  • #2
There will be skin friction on the roof surface of the train:

http://en.wikipedia.org/wiki/Parasitic_drag#Skin_friction

Is that what you are interested in? I can't see the use of calculating drag for the roof alone... Though, If you make an attempt we can help you solve the problem.
 

FAQ: Forces on the top of a bullet train

What is the purpose of studying forces on the top of a bullet train?

The purpose of studying forces on the top of a bullet train is to understand how these forces affect the train's stability, speed, and safety. This knowledge is crucial for engineers and designers to optimize the train's performance and ensure the safety of passengers.

What are the main forces acting on the top of a bullet train?

The main forces acting on the top of a bullet train include air resistance, gravity, and friction. Air resistance is the drag force exerted by the air as the train moves forward. Gravity pulls the train downward, while friction between the train and the tracks helps to keep it on the rails.

How do these forces affect the speed of a bullet train?

These forces can both positively and negatively affect the speed of a bullet train. Air resistance acts as a drag force, which can slow down the train. However, gravity and friction help to keep the train on the tracks and facilitate its movement, allowing it to reach high speeds.

How do engineers design bullet trains to minimize the impact of these forces?

Engineers use innovative designs and materials to minimize the impact of forces on the top of a bullet train. For example, they use aerodynamic shapes to reduce air resistance and lightweight materials to decrease the effects of gravity. They also design tracks with gentle curves and slopes to reduce friction and improve stability.

How do forces on the top of a bullet train affect the safety of passengers?

Forces on the top of a bullet train can affect the safety of passengers by causing instability or derailment. It is essential for engineers to carefully consider these forces and design the train to withstand them to ensure the safety of passengers. Additionally, regular maintenance and safety protocols can help to mitigate any potential risks.

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