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A block of mass \( 4 \mathrm{~kg} \) is suspended through two light
\( \mathrm{P} \) spring balances \( \mathrm{A} \) and \( \mathrm{B} \) in series. Then \( \mathrm{A} \) and \( \mathrm{B} \) will

W read respectively.
(1) \( 4 \mathrm{~kg} \) and zero \( \mathrm{kg} \)
(2) Zero \( \mathrm{kg} \) and \( 4 \mathrm{~kg} \)
(3) \( 4 \mathrm{~kg} \) and \( 4 \mathrm{~kg} \)
(4) \( 2 \mathrm{~kg} \) and \( 2 \mathrm{~kg} \)
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