An engine can pump 20000litres of water to a vertical height of 30 m in 10 minutes. Calculate the work done by the engine and its power also. (Take g =10 m/s square, density of water=1000 kg m /s cube and 1000 litres of water occupy a volume of 1 m cube.)
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Answered by
2
H=30m
T=10min=600s
Volume of the water lifted =20000L
=20000/1000=20m^3
Mass=volume ×dencity
=20×1000
=20000kg
Work done by engine =mgh
=20000×9.8×30
=....
..J calculation do yrslf
T=10min=600s
Volume of the water lifted =20000L
=20000/1000=20m^3
Mass=volume ×dencity
=20×1000
=20000kg
Work done by engine =mgh
=20000×9.8×30
=....
..J calculation do yrslf
Answered by
4
Answer:
given,
h=30metre
t=10 minute =10×60=600sec
g=10m/s^2
Explanation:
mass=density×volume
= 1000×1
=1000 kg
mass of 20000 litre water=20000kg
Then,
work done=PE=mgh
=20000×10×30
=6×10^6 joule
Power=work done/time taken
=6×10^6/600
=10000 watt
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