How Will Car 3 React in Different Cord Scenarios?

[VietDao29]

Hi,
I am not an native English speaker, so please forgive me if I have any mistakes. I am in grade 10th.
I cannot use the lab without permission, and anyway, I don't think that the teacher will let me use it just on my own. So I cannot immagine what will happen in the following cases: (Giving that there's no friction force):
-----------------
1. Picture 1a shows 3 cars. Car 3 on the right side of car 1, and car 2 on top of car 1, conecting with each other by a small cord (wieghtless).
Giving that the car 2 is moving forwards.
The car 1 will move backwards. How will the car 3 move. Will it touch the car 1's side like in picture 1b or will it be like picture 1c?
2. And how will the car 3 move if one of the side of the cord is sticked to the wall (Picture 2)? Will it move like picture 1b or 1c?
-----------------
Can you please help me.
I appreciate any help.
Thanks very much,

 

[wais]

Hello,

Thank you for reaching out. I am happy to help you with your questions about the movement of the cars in the given scenarios.

In the first scenario, with car 2 moving forward and car 1 connected to it by a weightless cord, car 1 will move backwards due to the force from car 2. This will cause car 3 to move as well. The direction of car 3's movement will depend on the length and angle of the cord. If the cord is short and at an angle, car 3 will most likely move in the same direction as car 2, touching the side of car 1 as shown in picture 1b. However, if the cord is longer and at a steep angle, car 3 may move in a different direction, possibly like in picture 1c. The exact movement of car 3 will also depend on external factors such as the weight and friction of the cars, and any other forces acting on them.

In the second scenario, with one side of the cord attached to the wall, car 3 will most likely move in the same direction as car 2, touching the side of car 1 as shown in picture 1b. However, the movement may also be affected by the length and angle of the cord and any external forces acting on the cars.

I hope this helps answer your questions. If you have any further questions, please feel free to ask. Best of luck with your studies.