Tension in rope (particles in Equilibrium)

AI Thread Summary
The discussion revolves around calculating the tension in a rope connecting two blocks, one weighing 72 N and the other 150 N. The confusion arises regarding whether to include the weight of the top block when determining the tension in the rope between them. It is clarified that the tension in the rope directly connecting the two blocks can be found by analyzing the lower block using a Free Body Diagram and applying Newton's first law. The tension in the upper rope will differ from that in the lower rope. Additionally, a question about measuring tension in a catapult for a science project is raised, indicating a broader interest in understanding tension in various contexts.
SoulInNeed
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1. OK, Two blocks are hanging from a ceiling, with a rope between them. The top block is 72 N, while the bottom block is 150 N. What is the tension in the rope between them?



Homework Equations





The Attempt at a Solution

My confusion is that I'm not sure if we're supposed to include the top block in this situation. Thus far, I know how to calculate the bottom tension in a rope (only include the bottom block), and the top tension in a rope (include both), but just simply saying tension gets me a little confused. If this sounds dumb, then please excuse me, I decided to read ahead of the class, so I'm on my own here.
 
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SoulInNeed said:
1. OK, Two blocks are hanging from a ceiling, with a rope between them. The top block is 72 N, while the bottom block is 150 N. What is the tension in the rope between them?



Homework Equations





The Attempt at a Solution

My confusion is that I'm not sure if we're supposed to include the top block in this situation. Thus far, I know how to calculate the bottom tension in a rope (only include the bottom block), and the top tension in a rope (include both), but just simply saying tension gets me a little confused. If this sounds dumb, then please excuse me, I decided to read ahead of the class, so I'm on my own here.
'What is the tension in the rope between them', means what is the tension on the rope connected directly between the top and bottom blocks? The tension in the upper rope will be different. You have the right idea i think: draw a Free Body Diagram of the lower block, and determine that lower rope tension using Newton's first law.
 
PhanthomJay said:
'What is the tension in the rope between them', means what is the tension on the rope connected directly between the top and bottom blocks? The tension in the upper rope will be different. You have the right idea i think: draw a Free Body Diagram of the lower block, and determine that lower rope tension using Newton's first law.
Yeah.
 
how do you measure tension on a catapult because i am doing a science project and i don't know how
 

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