A cubical block of side 0.5 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 = 103 kg/m3 ]
(1) 46.3 kg
(2) 87.5 kg
(3) 65.4 kg
(4) 30.1 kg