Physicshard · Past Paper
The power of a motor which can lift 600 kg of water through a height of 20 m in 1 minute is: (g = 10 m/s^2)
A2000 W
B200 W
C12000 W
D1200 W
✓ Correct Answer: A — 2000 W
Power = mgh / t = (600 * 10 * 20) / 60 = 120000 / 60 = 2000 Watts.
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