Where have i gone wrong with this basic mechanics question?

  • Thread starter coffeem
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  • #1
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Homework Statement



[PLAIN]http://img155.imageshack.us/img155/7789/questionz.jpg [Broken]


The Attempt at a Solution



[PLAIN]http://img826.imageshack.us/img826/1492/myatteptm.jpg [Broken]

NOTE - it said as an aside it was meant to be 8kg and not 18!
 
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Answers and Replies

  • #2
Doc Al
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Redo the arithmetic in the last step, when solving for v.
 
  • #3
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Redo the arithmetic in the last step, when solving for v.
thanks! does the rest of it look ok?
 
  • #4
Doc Al
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does the rest of it look ok?
Yes, it looks fine. My only suggestion is that you be careful about rounding off too soon.
 

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