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 into it. The mass of the man is ?  Select.
A) 77 kg  B) 60 kg  C) 77 kg  D) 55 kg  E) 47 kg
In this type of question, first we will calculate the volume of water displaces then will multiply with the density of water.   Volume of water displaced = 3*2*0.01= 
<gadget id="calculator">3*2*0.01</gadget>
<output>0.06</output>
0.06 m cube   Mass of Man= Volume of water displaced * Density of water   = 0.06 * 1000= 
<gadget id="calculator">0.06 * 1000</gadget>
<output>60</output>
60 kg   Answer: 60 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 cm when a man gets into it. The mass of the man is ?