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Tension of strings problem

  • Thread starter allora_97
  • Start date
  • #1
13
0
Tension problem!!

Homework Statement


Consider a force F = 887 N pulling 3 blocks
of masses m1 = 9 kg, m2 = 16.9 kg, and
m3 = 26.1 kg along a frictionless horizontal
surface.
The tension of the strings are T1 and T2 (see
sketch).
The equation of motion of m2 is given by
1. T1 − T2 = m1 a .
2. T1 − T2 = m2 a .
3. T1 = m2 a .
4. T1 − T2 = (m1 +m3) a .
5. T1 + T2 = m1 a .
6. T1 = (m1 + m3) a .
7. T1 + T2 = m2 a .
8. T1 = m1 a .
9. T1 + T2 = (m1 +m3) a .


Homework Equations



F=ma

The Attempt at a Solution


T1 = m2a
T2 = m3a
When I try to solve through substitution, I don't get any of the choices above.
What do i do next?
 

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Answers and Replies

  • #2
rl.bhat
Homework Helper
4,433
5


Net force acting on m2 is T1 - T2.
 
  • #3
1
0


Divide the force by all of the masses combined (m1+m2+m3) and this will give you the acc.

Just FYI for the first part of the problem
 

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