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Original Question
How long will it take a 1920 W motor to lift a 285 kg piano to a sixth-story window 16.0 m above?Asked by Cara
How long will it take a 480 N motor to lift a 335 kg piano to a sixth-story window 15.0 m above?
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Answered by
Ms. Sue
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Answered by
drwls
480 N is not a power specification. It is a force specification. Newtons (N) measure force.
You need a specification of motor power (such as horsepower or Watts) to answer this question. Any motor can provide an arbitrary force by using levers or hydraulic pistons for mechanical advantage.
You need a specification of motor power (such as horsepower or Watts) to answer this question. Any motor can provide an arbitrary force by using levers or hydraulic pistons for mechanical advantage.
Answered by
Cecilia
Show that 480 W of power is expended by a weightlifter when lifting a 60-kg barbell a vertical distance of 1.2 m in a time interval of 1.5 s.
Answered by
Erma
5m
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