Maharashtra Class 9 Answered
An electric pump has 2kW power. How much water it can lift every minute to height of 10m?
Asked by sagareharsh123 | 20 Sep, 2018, 04:31: PM
Expert Answer
Power (P) = 2 kW = 2000 W
Power (P) in Watts = J/s
1 Watt = 1 J / s
Therefore, 2000 W = 2000 J/s
One minute = 60 seconds
Power (P) is also given by
P = Work Done (W)/(t) ...(1)
w = mgh
Height (h) = 10m
g = 9.8 m/s2
Applying all the abovve data in equation (1)
P = (m x 9.8 x 10)/60
2000 = (m x 9.8 x 10)/60
Therefore, m = 1224.489 Kg
Thus, the given electric pump can lift 1224.489 Kg, every minute to height of 10m.
Answered by Abhijeet Mishra | 21 Sep, 2018, 06:44: PM
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