A boat having a length 3 m and breadth 2 m is floating on a lake. The boat sinks by 1.5 cm when a man gets on it. The mass of man is Pick one:
A) 12 kg B) 90 kg C) 72 kg D) 96 kg E) None
Solution   Volume of water displaced	= (3 x 2 x 0.015)m3   = 0.09m3.   Mass of man	=Volume of water displaced ×Density of water   = (0.09×1000) kg   = 90 kg.   Answer 90 kg
<result>B</result>
A boat having a length 3 m and breadth 2 m is floating on a lake. The boat sinks by 1.5 cm when a man gets on it. The mass of man is