Physics, 21.04.2021 22:20 chevysilverado2377
the motor for a lift in a tall building uses 12000 W of power. The lift and its passengers have a mass of 500kg. The lift motor takes 10s to raise the lift and its passengers through a height of 20m. Work out the percentage efficiency of the lift motor.
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the motor for a lift in a tall building uses 12000 W of power. The lift and its passengers have a ma...
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