A little help

  • Thread starter mratwi36
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  • #1
mratwi36
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a little help pleasezz

http://i21.photobucket.com/albums/b283/NMchugh/Various/vectors.png

i'd like just some confirmation on my answers and thanks alot.the link is the question.

well calling AB=T1, BC=T2 and BD=T3
recommend splitting vectors into components and equating them...

Vertical Component of T1 = T1*sin60 = weight of mass = 40*9.8=392N therefore T1 = 452.6N

now T2 = horizontal components of T1 & T3 = (T3*4/5)+(T1*Cos60)
now Vert. comp. T3 = T3*3/5 = Vert. comp. T1 = weight of mass =392N (from first line)
therefore T3=653.3N

now substitute T3 = 635.3N and T1 = 452.6N into the equation for T2 above and you find T2=748
 
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Answers and Replies

  • #2
mratwi36
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Would Really appreciate the small help as am lost right now in this question,and would be so grateful.
 
  • #3
Redbelly98
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Your answers look good.
 

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