Tension and Velocity: Physics Explained

AI Thread Summary
Tension in a string with a weight is equal to the mass times gravity, but when the string gains velocity and moves horizontally, the tension increases significantly, potentially leading to the string snapping. The opposing forces due to the object's velocity create additional tension, influenced by centripetal acceleration. Real-world tests are suggested to observe these effects, though some participants lack the necessary materials for experimentation. The discussion highlights the relationship between tension, velocity, and the resulting forces acting on the string. Understanding these dynamics is crucial for predicting the string's behavior under different conditions.
TimeInquirer
Messages
32
Reaction score
0
Hello, I was recently reading a physics book and was told that, if a string were to hang down with a weight attached to it, its tension would be the mass times gravity. However, if it were to gain some velocity and move from left to right, the tension would increase enough so that the string would be cut. The book doesn't go into further detail. Does the force of the velocity oppose the string? Can someone please explain this to me, possibility showing equations to describe this motion? Thanks
 
Physics news on Phys.org
The string will most likely snap. How come you do not do a real world test?
 
I have watched a few videos, and I lack the sufficient material to produce adequate results (a.k.a poor strings and lack of a weight). I understand that it does happen but not sure why.
 
What is the path of the object when it is swinging? What do you know about centripetal acceleration?
 
It's all about the force going into the string and force going out towards the book.
That will result a friction and centripetal acceleration that makes the string snap. ;)
 
The rope is tied into the person (the load of 200 pounds) and the rope goes up from the person to a fixed pulley and back down to his hands. He hauls the rope to suspend himself in the air. What is the mechanical advantage of the system? The person will indeed only have to lift half of his body weight (roughly 100 pounds) because he now lessened the load by that same amount. This APPEARS to be a 2:1 because he can hold himself with half the force, but my question is: is that mechanical...
Some physics textbook writer told me that Newton's first law applies only on bodies that feel no interactions at all. He said that if a body is on rest or moves in constant velocity, there is no external force acting on it. But I have heard another form of the law that says the net force acting on a body must be zero. This means there is interactions involved after all. So which one is correct?
Thread 'Beam on an inclined plane'
Hello! I have a question regarding a beam on an inclined plane. I was considering a beam resting on two supports attached to an inclined plane. I was almost sure that the lower support must be more loaded. My imagination about this problem is shown in the picture below. Here is how I wrote the condition of equilibrium forces: $$ \begin{cases} F_{g\parallel}=F_{t1}+F_{t2}, \\ F_{g\perp}=F_{r1}+F_{r2} \end{cases}. $$ On the other hand...
Back
Top