a motor pump takes 30 mins to fill tank 2*3*4 m2 which is 10 m height from ground water.find time to fill tank 3*4*5 m2 which is 20 m height from ground water
deepanath bujima , 13 Years ago
Grade 12th Pass
1 Answers
Shyama P
Last Activity: 13 Years ago
Case 1:
Power P=E/t=mgh/t=density*V*g*h/t= (103 * 2*3*4*10*10)/(30*60)=4000/3 Watt
Case 2:
P*t=E
t (in sec)=(dVgh)/P=(103* 3*4*5*10*20)/(4000/3)=9000sec=150min=2hrs30min
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