B Can someone explain attraction using the 'two people throwing balls' analogy?

  • B
  • Thread starter Thread starter Deepak K Kapur
  • Start date Start date
  • Tags Tags
    Attraction
AI Thread Summary
The discussion centers on the confusion surrounding the 'two people throwing balls' analogy used to explain attraction. Participants explore the concept of repulsion, using an example of two individuals on an ice pond who are pushed back by unseen forces when they interact. The analogy is further clarified with the boomerang example, where the act of throwing and catching creates a mutual pull between the two people. One participant requests more detail on the analogy, emphasizing the importance of understanding the mechanics behind the momentum transfer involved. The conversation highlights the complexities of explaining attraction through physical analogies.
Deepak K Kapur
Messages
164
Reaction score
5
Hi,
I fail to understand attraction with the 'two people throwing balls at each other' analogy.

Please help.
 
Physics news on Phys.org
Deepak K Kapur said:
I fail to understand attraction with the 'two people throwing balls at each other' analogy.

actually it comes to repulsion.

One can think about forces related to the following situation:

Two people say A and B are standing on an ice pond. A moves his arm and is pushed backwards.

A moment later B grabs at an invisible object and is driven backwards (repulsed).

Even though ONE cannot see a ball, ONE can assume that one person threw a ball to the other person because you see its effect on the two people.An another example is often used to explain attraction instead of repulsion is ...two people on an ice pond throwing boomerangs at each other.

The boomerang is thrown away from the catcher but it circles to the catcher in the thrower's direction, both the thrower and the catcher are impulsed toward each other by the throwing and catching actions.
 
Deepak K Kapur said:
Hi,
I fail to understand attraction with the 'two people throwing balls at each other' analogy.

Please help.
Could you quote this analogy in a bit more detail? The boomerang thing works well but, in that case, it relies on transferring momentum to the rest of the World via the atmosphere, which the boomerang relies on.
 
I think it's easist first to watch a short vidio clip I find these videos very relaxing to watch .. I got to thinking is this being done in the most efficient way? The sand has to be suspended in the water to move it to the outlet ... The faster the water , the more turbulance and the sand stays suspended, so it seems to me the rule of thumb is the hose be aimed towards the outlet at all times .. Many times the workers hit the sand directly which will greatly reduce the water...

Similar threads

Back
Top