In the arrangement shown, block A of mass \( 15 \mathrm{~kg} \) is supported in equilibrium by t...

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In the arrangement shown, block A of mass \( 15 \mathrm{~kg} \) is supported in equilibrium by the block B.
\( \mathrm{P} \)
Mass of the block B is :-
W
[assume pulleys are massless and smooth]
(1) \( 2 \mathrm{~kg} \)
(2) \( 3 \mathrm{~kg} \)
(3) \( 4 \mathrm{~kg} \)
(4) \( 5 \mathrm{~kg} \)
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