Tension of rope between 2 blocks

Click For Summary

Homework Help Overview

The discussion revolves around a physics problem involving two blocks being pulled across a frictionless surface, with a focus on calculating the tension in the rope between the blocks. The original poster presents the problem statement, including the masses of the blocks and the acceleration, while expressing uncertainty about the concept of tension.

Discussion Character

  • Exploratory, Conceptual clarification, Mathematical reasoning

Approaches and Questions Raised

  • Participants discuss using Newton's second law (F=ma) to analyze the forces acting on the blocks. There are attempts to express the net forces on each block and questions about how to relate the tensions in the ropes to the forces acting on the blocks.

Discussion Status

The discussion is ongoing, with participants providing guidance on how to approach the problem. There is a focus on clarifying the relationships between the forces and tensions, but no consensus has been reached regarding the specific calculations or expressions needed.

Contextual Notes

Some participants note the original poster's missed class and the potential impact on their understanding of the topic. There is also a mention of the need to clarify the definitions of the forces involved in the problem.

Notion
Messages
10
Reaction score
0
Hey guys I"m new to the forum so I just wanted to say what's up? You'll be seeing me a lot more often btw. :]

Homework Statement


Rachel is pulling 2 blocks across a horizontal friction less surface with an acceleration of 1.5m/s/s. The mass of Block 1 is 4kg and Block 2 is 2kg.

1) What is the tension in the rope between the blocks?
2) What is the tension of the rope being pulled?

Diagram :

ws00w0.png


Homework Equations



F=ma is all I know because I missed the lesson where my teacher went over tension, I missed class due to a religious holiday btw.

The Attempt at a Solution



Well because its a friction-less surface I don't have to worry about that, but all I have to work with is
F=ma
2 masses
Acceleration

So only guess I have is because the blocks are being pulled horizontally the answer to part 1 might be just FofBlock2 - FofBlock1 = T1? (If you look at the diagram it makes more sense!)

For part 2 I have no idea..
 
Physics news on Phys.org
You can use F=ma to calculate the force on the left hand block. Then consider the total force on the right-hand block.
 
What do you mean by consider it?
 
Notion said:
What do you mean by consider it?
Write an expression for the net force on the right hand block. What value does it need to have to produce the desired acceleration?
 
We already have acceleration though?

But on the right hand block would FofBlck1= Ftotal - FofBlock2 ?

And how do I find T2?
 
Notion said:
We already have acceleration though?

But on the right hand block would FofBlck1= Ftotal - FofBlock2 ?

And how do I find T2?
What do you mean by these quantities: FofBlck1, FofBlock2, Ftotal ?

The tension, T1 in rope 1 is the force acting to the right on block, B1.

The tension, T2 in rope 2 is the force acting to the left on block, B1.

The tension, T2 in rope 2 is also equal the force acting on block, B2, but it acts to the right on B2.

What's the net force on each block?
 

Similar threads

  • · Replies 38 ·
2
Replies
38
Views
5K
Replies
4
Views
1K
Replies
13
Views
3K
Replies
2
Views
2K
  • · Replies 6 ·
Replies
6
Views
2K
  • · Replies 25 ·
Replies
25
Views
6K
Replies
4
Views
998
Replies
2
Views
1K
Replies
3
Views
1K
  • · Replies 10 ·
Replies
10
Views
3K