Four blocks of the same mass \( m \) connected by cords are pulled by a force \( F \) on a smoot...

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Four blocks of the same mass \( m \) connected by cords are pulled by a force \( F \) on a smooth horizontal surface as shown in Fig. 8.20.
Figure \( 8.20 \)
Determine the tensions \( T_{1}, T_{2} \) and \( T_{3} \) in the cords.
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