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12 votes
4 answers
4k views

How does a snake climb the wall?

Consider a snake climbing up the wall or ant climbing up the wall, which force is responsible for it? An obvious answer is frictional force but my question is that if there is a normal reaction ...
Kampann's user avatar
  • 151
1 vote
0 answers
43 views

Spoon with Marmalade in Space [closed]

I sit in a space shuttle in zero gravity condition. I have a spoon in one hand and the jar of marmalade in the other. I take marmalade with spoon. If I shake it very hard, will the marmalade detach ...
E.Z's user avatar
  • 111
1 vote
0 answers
15 views

How to implement Macro-scale dyanmics simulation with adhesive and cohesive failure?

It's my first question here about physics. I would like to ask about the macro-scale physics (the governing equation) needed to implement a dynamics simulator with adhesion and cohesion. Consider the ...
BeayBeaver's user avatar
5 votes
3 answers
630 views

What is the result of this Newton's cradle experiment where the initial ball doesn't bounce (exactly as in the regular case) but it has glue on it?

I have a question about a Newton's cradle type collision, but it has a twist to it. First, I will describe two well-known results, and then I'll add my twist. First, consider a cradle with five balls (...
Maximal Ideal's user avatar
0 votes
1 answer
54 views

If friction and normal force are both the components of contact force, shouldn't the friction be repulsive?

Is friction due to intermolecular attractive forces or repulsive ones. Since both friction and normal force are the components of contact forces, shouldn't friction be repulsive.
Malik Malik's user avatar
0 votes
2 answers
380 views

Stiction, friction and sticking

If we have two flat surfaces touching each other and apply a force parallel to the surfaces, one may move relative to the other. An example would be a polymer block gliding on another. Dependent on ...
Volker Siegel's user avatar
-1 votes
2 answers
275 views

FBD with a system with glue

I am trying to understand how Adhesives or glues work. In the process I started thinking of drawing the Free body diagram. What will the FBD look like for the Blocks A, B and the adhesive itself? (I ...
gpuguy's user avatar
  • 823
3 votes
1 answer
772 views

Why don't we include the adhesive and cohesive force while calculating rise in a capillary tube?

The contact angle of a liquid solid interface is explained by saying that the liquid surface must be perpendicular to the resultant of adhesive cohesive and gravitational forces acting on it, since it ...
Gerard's user avatar
  • 2,780