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Same spring is attached with \( 2 \mathrm{~kg}, 3 \mathrm{~kg} \) and \( 1 \mathrm{~kg} \) blocks in three different cases as shown in figure. If
P \( x_{1}, x_{2} \) and \( x_{3} \) be the extensions in the spring in these

W. cases then (Assume all the blocks to move with uniform acceleration)
(1) \( x_{1}=0, x_{3}x_{2} \)
(2) \( x_{2}x_{1}x_{3} \)
(3) \( x_{3}x_{1}x_{2} \)
(4) \( x_{1}x_{2}x_{3} \)
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