Pulley problem, find total mass where ther is no acceleration

  • Thread starter vande060
  • Start date
  • #1
186
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Homework Statement



you need to see the picture for this one

http://s861.photobucket.com/albums/ab174/alkaline262/?action=view&current=prob13.jpg


Homework Equations



f=ma



The Attempt at a Solution



i dont really know where to start on this one.

i have the equations for force

2T - m2g = -m2a2

N - m1g = 0

T = m1a1

i think i should set a to zero

2T = m2g
T=0

that step doesn't make sense to me, because how can the tension = 0 ?
 
Last edited:

Answers and Replies

  • #2
322
0
are the pulleys negligible?
 
  • #4
186
0
bump. i still dont understand this problem when i solve for t is get t = -2g/(1/m1 - 4/m2)

is that right? what can i do with it ?
 

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