Theory question

  • Thread starter jaidon
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  • #1
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i have a question where it asks me to find the uncertainty in a ball's postion (m=50g). i have that part all figured out, but then it asks me what the answer indicates about the relevance of quantum mechanics to macroscopic objects. (the answer was approx. 10^-32m, a very small uncertainty). i am having troubles understanding this. i'm not sure what to do. i know that HUP in general says that we can't know with certainty both the position and momentum of a particle at the same time, and the equation
(delta x)(delta p) >h/4pi.

i'm not sure where to go with this. any advice?
 

Answers and Replies

  • #2
dextercioby
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What's the typical range of macroscopic objects...?In "m".Compare that value with the uncertainty u found...

Daniel.
 
  • #3
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so the size of macroscopic objects is much larger than what the uncertainty in their positions. i'm not sure what this means in regards to quantum mechanics. i find quantum physics so confusing and i highly respect anyone who understands and enjoys it.
 
  • #4
dextercioby
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So QM has given u a number which is about 27 order of magnitude off the realms of macroscopical physics.The conclusion is simple:QM and the HUP in particular give nonsignificative results when applied to macroscopic objects.

Daniel.
 
  • #5
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this is probably a stupid question, but what exactly qualifies as macroscopic ie)what is the actual range?

also, i get the question now. it was much simpler than what i was trying to make it out to be. thanks for the imput. you physics guys rock.
 

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