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Homework Help: physics

Posted by sw on Saturday, April 9, 2011 at 9:09pm.

a stone is tied to the end of a string and is swung with a constant speed around a horizontal circle with a radius of 1.5m. if it makes two complete revolutions each second, what is the magnitude of its acceleration?

i know the answer, but i don't know how to get it. thank you!

• physics - bobpursley, Saturday, April 9, 2011 at 9:11pm

  acceleration= v^2/r
  
  where v= 2PIr/.5sec
  

• physics - sw, Saturday, April 9, 2011 at 9:14pm

  thank you sooo much! :)
  

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