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 ]
a. 46.3 kg
b. 87.5 kg
c. 65.4 kg
d. 30.1 kg