An elevator in a tall building is fitted with a counterweight.
The total mass of the car and passengers is 668 kg. The counterweight has mass 512 kg. A motor lifts
the elevator car through a distance of 16.2 m in 15.0 s. The efficiency of the motor is 24.0%. Calculate
the total input of electrical power to the motor
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Answers: 2
Physics, 22.06.2019 06:30
At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid
Answers: 1
An elevator in a tall building is fitted with a counterweight.
The total mass of the car and passen...
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