A boat having a length 5 m and breadth 2 m is floating on a lake. The boat sinks by 1cm when a man gets on it. The mass of the man is:  Pick one.
A) 100 kg
B) 60 kg
C) 72 kg
D) 96 kg
E) None of these
Explanation:   Volume of water displaced = (5 x 2 x 0.01) m3   = 0.10 m3.   ∴ Mass of man = Volume of Water displaced x Density of water   = (0.10 x 1000)kg   = 100 kg.   100 kgnswer: 100 kg
<result>A</result>
A boat having a length 5 m and breadth 2 m is floating on a lake. The boat sinks by 1cm when a man gets on it. The mass of the man is: