What is the mass of the man, if a boat of length 4m, width 1.5m floating on a river sinks by 0.015 m when the man gets on the boat? Choose the correct choice from the following answers:
A) 100kg
B) 90kg
C) 80kg
D) 70kg
E) None of these
SOLUTION :   Volume of water displaced = 4*1.5*0.015= 
<gadget id="calculator">4*1.5*0.015</gadget>
<output>0.09</output>
0.09m3   Mass= volume of water displaced * density of water   Mass = 0.09 * 1000= 
<gadget id="calculator">0.09 * 1000</gadget>
<output>90</output>
90kg   ANSWER IS 90kg
<result>B</result>
What is the mass of the man, if a boat of length 4m, width 1.5m floating on a river sinks by 0.015 m when the man gets on the boat?