Physics Olympics: Design System for Cable Car "Bomb" Drop

[xporcelainx]

Homework Statement

Drop the Bomb
a. design a system that attaches to a moving cable car. The system must drop a water balloon "bomb" on a large target while moving. Cable car is supplied.
[this was the information students were given.]

Homework Equations

The Attempt at a Solution

Any ideas? I'm pretty stumped myself. I though maybe some sort of removable bottom to the box, but the box has to keep moving the whole time. Since the zip line the car is traveling between is attached to two trees, my first thought was to have a removable door tied to a string tied to the tree. This string would be the same length as the distance from tree to target. The door would come off at the end of the rope, and balloon would fall.
Do you think this would work out? I'm just looking for some feedback. Thanks!

 

[Mindscrape]

Keep in mind that the balloon travels at the same speed as the car in the "x-direction."

 

[Moetasim]

Hi there,

Thank you for sharing your thoughts on this design challenge. As a physicist, I have some suggestions for you.

Firstly, you are on the right track with the idea of a removable door tied to a string. This can work as long as the length of the string is carefully measured to ensure that the balloon will drop at the desired location. Additionally, you could also consider using a release mechanism that is triggered by a sensor attached to the cable car. This way, you can ensure that the balloon is dropped at the exact moment the cable car passes over the target.

Another important factor to consider is the weight and shape of the balloon. You will need to calculate the speed and trajectory of the cable car in order to determine the best weight and shape for the balloon to reach the target accurately.

Furthermore, it would be beneficial to consider the wind and air resistance in your design. You may need to add fins or other stabilizing components to the balloon to ensure it stays on course while in the air.

Overall, your idea of a removable door tied to a string can work, but it is important to carefully consider all the factors and make precise measurements to ensure the success of the design. Good luck with your project!