# Salisbury University

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How long will it take a 480 N motor to lift a 335 kg piano to a sixth-story window 15.0 m above?

• Physics? -

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• physics -

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.

• Grand Canyon University -

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.

• Salisbury University -

5m

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