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Grade: 10
        
A motor pumps 1000 litres of water in one second upto a height of 10m. If the efficiency of motor is 70%, find the power required to run it ? 
3 years ago

Answers : (1)

Nicho priyatham
625 Points
							
power=(work done)/(time taken)
work done= mgh=(volume)x(density)gh
here time =1s h=10m
now actual power=(caluclated power x 100)/efficiency
taking g=10ms-2 and density=1kg/l 
we get power=106/7
3 years ago
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