# Calculate the power of an electric motor that can lift 800kg water to store in a tank at a height of 1500cm in 20sec?take g-20ms2

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Height, s = 1500 cm = 1.5 m

Time, t= 20 s

Gravity = 10m/s²

(You have given 20 m/s² ; but its normally taken 10 m/s² ; I think u have done typing mistake )

Power = Work/Time

Work = Fs

= 800×10×1.5

= 12,000 J

Power = 12000/20 = 600 W

Or if g = 20 m/s²

Then,

Mass, m = 800 kg

Height, s = 1500 cm = 1.5 m

Time, t= 20 s

Gravity = 20m/s²

Power = Work/Time

Work = Fs

= 800×20×1.5

= 24,000 J

Power = 24000/20 = 1200 W