A cubical block of side \( 0.5 \mathrm{~m} \) floats on water with \( 30 \% \) of its volume und...

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A cubical block of side \( 0.5 \mathrm{~m} \) floats on water with \( 30 \% \) of its volume under water. What is the maximum weight that can be put on the block without fully submerging it under water (Take density of water \( =10^{3} \mathrm{~kg} / \mathrm{m}^{3} \) ) [JEE (Main) 2019]
(a) \( 87.5 \mathrm{~kg} \)
(b) \( 46.3 \mathrm{~kg} \)
(c) \( 30.1 \mathrm{~kg} \)
(d) \( 65.4 \mathrm{~kg} \)
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