anonymous
  • anonymous
Newton's Law of motion problem the question is in the picture.
Physics
katieb
  • katieb
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anonymous
  • anonymous
1 Attachment
anonymous
  • anonymous
I already know a,b,c,e
anonymous
  • anonymous
my problem is D and F broke the friction. So the acceleration of them is not 0 anymore so how do I get the acceleration of D and F

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anonymous
  • anonymous
A,B,C,E force is not enough to broke the static friction so the acceleration is 0 right? And D and F is enough to broke the friction so I have to get the acceleartion of it (which I don't know how to)
dan815
  • dan815
find the resultant force first
dan815
  • dan815
|dw:1441163777507:dw|
dan815
  • dan815
Force of friction is always opposite the motion
dan815
  • dan815
|dw:1441163866834:dw|
dan815
  • dan815
|dw:1441163904703:dw|
dan815
  • dan815
if mg = 21 then m=21/9.8
dan815
  • dan815
once u find Fnet u can find the total acceleration then
anonymous
  • anonymous
hi hi hi hmmm so I got m
anonymous
  • anonymous
wait going to read your text thanks
anonymous
  • anonymous
so my Fnet is 39.6645 @dan815 ?? and my m is 2.1428? Fnet = ma -> 39.6645=2.1428a a = 18.51 m/s^2 ????
anonymous
  • anonymous
hmm wait may fnet is 6.5
anonymous
  • anonymous
my acceleartion in (j) is 3.03 and my acceleartion in (l) is -2.54 can you pls confirm @dan815

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