B Understanding Friction: The Impact of Inter-Molecular Bonding on Movement

[rudransh verma]

Imagine a solid body big and heavy. It will have friction between it and the surface when tried to move. Somehow the cluster of molecules opposes the push.

When free these molecules stick on surface and can be moved by a mere blow of wind but when bonded into a solid body the structure of large collection of molecules put pressure on the molecules below and the actual contact area increases as we increase weight. Now the molecules come very close to the surface and this creates inter molecular bonding which opposes any applied force on the body. When we apply force on above part of the body it opposes our push because it’s bonded to the molecules that are in turn weakly bonded to the surface.

In starting the body is heavy. More actual contact area. More bonding and so more opposing of movement of above part of body experiencing more friction. As the body starts melting(and let’s just wipe out the melted part) the pressure of above molecules on the very lower part decrease and so does the inter molecular bonding. This means lesser force on the upper part and the body will move more easily with the lowest layer of molecules in touch with surface.
Am I thinking it right?

 

[SammyS]

Imagine a solid body big and heavy. It will have friction between it and the surface when tried to move. Somehow the cluster of molecules opposes the push.

When free these molecules stick on surface and can be moved by a mere blow of wind but when bonded into a solid body the structure of large collection of molecules put pressure on the molecules below and the actual contact area increases as we increase weight. Now the molecules come very close to the surface and this creates inter molecular bonding which opposes any applied force on the body. When we apply force on above part of the body it opposes our push because it’s bonded to the molecules that are in turn weakly bonded to the surface.

In starting the body is heavy. More actual contact area. More bonding and so more opposing of movement of above part of body experiencing more friction. As the body starts melting(and let’s just wipe out the melted part) the pressure of above molecules on the very lower part decrease and so does the inter molecular bonding. This means lesser force on the upper part and the body will move more easily with the lowest layer of molecules in touch with surface.
Am I thinking it right?

To answer your final question first. Answer: No.

Why mention melting if you are then saying to just wipe it out?

 

[russ_watters]

When free...
As the body starts melting(and let’s just wipe out the melted part)

You haven't substantively changed your post. If anything, you've added contradictions (talk about water without talking about water?) that make it worse. Thread closed. Please don't re-start the thread unless you are actually making the change to the premise you say you want to make.