Designing a Car with Multiple Boxes: Free Body Diagrams

In summary, the conversation is about designing a car that can carry multiple stacked boxes and understanding the forces involved. The main question is about the stability of the stacked boxes and why adding more boxes makes it easier for them to fall off. It is suggested to model the situation with one box first and then vary its height. The concept of center of mass and equilibrium is mentioned as a way to understand the stability of the stacked boxes. The practical implication is that the likelihood of toppling over is similar whether there is one high box or multiple stacked boxes.
  • #1
Ken12332123123123
3
0
hi, i am studying about design the box carried on car.
i am really stuck in how to draw free body diagram for when 3 or more boxes stack together on car running and braking. there are many example with 2 boxes but i don't know why i can't find any case with 3 or more boxes
thanks in advance
 
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  • #2
hello,
i have a question about the box carried on car: why the more boxes we stack the easier it fall down ? can anyone explain it in details
thanks
 
  • #3
Ken12332123123123 said:
hello,
i have a question about the box carried on car: why the more boxes we stack the easier it fall down ? can anyone explain it in details
thanks

For a start, model one box, then vary its height.
 
  • #4
can you please give me detail. the thing is i think it is different when we use 1 high box and 3 boxes stacking with each other because they separate
 
  • #5
Ken12332123123123 said:
can you please give me detail. the thing is i think it is different when we use 1 high box and 3 boxes stacking with each other because they separate
I don't understand your problem. If you must design a car with three boxes stacked on top of each other, it is quite the same diagram as when there are two boxes. Just that now there is another box introducing its own forces.

As for the other question about more boxes making the boxes fall off easily, think about the center of mass of the boxes and then the support of the boxes. You should have learned about stable, unstable and neutral equilibrium, how do you think that those relate to the question?
 
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  • #6
Ken12332123123123 said:
can you please give me detail. the thing is i think it is different when we use 1 high box and 3 boxes stacking with each other because they separate
In practical terms: If they slide off each other, then a single box will slide off the roof too. The difference is in likelihood of toppling over, for which a high box is similar to multiple boxes.
 

1. How do free body diagrams help in designing a car with multiple boxes?

Free body diagrams are a visual representation of all the forces acting on a body. In the case of designing a car with multiple boxes, free body diagrams can help identify the forces acting on each box and how they interact with each other. This information is crucial in determining the structural integrity and stability of the car.

2. How do you create a free body diagram for a car with multiple boxes?

To create a free body diagram for a car with multiple boxes, you first need to identify all the boxes and their respective masses. Then, draw a dot to represent each box and label it with its mass. Next, draw arrows to represent all the forces acting on each box, such as weight, normal force, and any applied forces. Finally, label each arrow with the corresponding force and direction.

3. What are the key considerations when designing a car with multiple boxes using free body diagrams?

When designing a car with multiple boxes, some key considerations to keep in mind are the weight distribution of the boxes, the forces acting on each box, and how the boxes interact with each other. Additionally, the overall stability and balance of the car should be considered to ensure safe and efficient operation.

4. Can free body diagrams be used for real-world car design?

Yes, free body diagrams are commonly used in real-world car design. They provide a simplified representation of the complex forces acting on a car and help engineers make informed decisions about the design and structural integrity of the car.

5. How can free body diagrams help optimize the performance of a car with multiple boxes?

Free body diagrams can help optimize the performance of a car with multiple boxes by identifying any potential imbalances or weak points in the design. This information can be used to make adjustments and improvements to the car's design, resulting in better overall performance and stability.

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