Constructing a Physics Demo with Household Items

[famous]

Homework Statement

construct a demonstration out of household items, then explain the physics behind the demonstration using examples of physics concepts


Each explanation should contain these things:
1. What specific physics concept is demonstrated?
2. how does the physics concept apply to your demonstration?
3. Why the concept is important to your project?
4. When does this physics concept affect you in your everyday life?
5. pictures of your demo and other everyday applications.

Homework Equations

The Attempt at a Solution

i just need some ideas with some info please
thank you so much

if it is not in the right category sorry
just please i need some help

 

[famous]

ok i figured out an idea of something to construct but if someone could help me with the explanation of it
well...
that would be nice..
I decided to like design like a ball attracted to a string and well like this___________________
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@ <(^_^)>
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@ <(^_^)>when I start the ball from right next to the item ("<(^_^)>") and let it go when it comes it will never hit the item

can someone give a good explanation of this with the stuff needed that i posted in the previous post

thank guys so much for helping
^_^