17. A boat having a length 3 m and breadth 2 m is floating on a lake. The boat sinks by 1 cm when a man gets on it. The mass of man is
A. 12 kg B. 60 kg
C. 72 kg D. 96 kg
Answer:
Volume of water displaced = (3 x 2 x 0.01)m3
= 0.06m3.
Mass of man =Volume of water displaced ×Density of water
= (0.06×1000) kg
= 60 kg.
