Tension force at molecular level

AI Thread Summary
When a force is applied to both ends of a rope or cable, the molecules within the material experience electromagnetic attraction, which keeps them in a resting state. Pulling on the rope causes deformation, moving the molecules away from this equilibrium position. The molecules then exert a restoring force, attempting to return to their original arrangement. This interplay of forces generates tension within the rope. Understanding this molecular behavior is key to grasping how tension operates at a fundamental level.
attentater
Messages
2
Reaction score
0
hey, i want to understand how does the molecules of a rope or cable generate tension when force is applied at both ends. consider a block of mass m hanging from a ceiling with the help of a string. please explain what's goin on at the molecular level in a rope when forces are applied at both ends.
 
Physics news on Phys.org
The molecules in a solid are attraced to each other by electromagnetic forces. When you pull on the rope, you deform it, and actually move the molecules away from their resting state. They want to go back to their resting state, and will pull in order to do so.
 
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...
Hello everyone, Consider the problem in which a car is told to travel at 30 km/h for L kilometers and then at 60 km/h for another L kilometers. Next, you are asked to determine the average speed. My question is: although we know that the average speed in this case is the harmonic mean of the two speeds, is it also possible to state that the average speed over this 2L-kilometer stretch can be obtained as a weighted average of the two speeds? Best regards, DaTario
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?
Back
Top