Posted by **Cara** on Wednesday, April 6, 2011 at 6:18pm.

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? -
**Ms. Sue**, Wednesday, April 6, 2011 at 6:23pm
If you want help from an expert, please type your __School __**Subject** in the appropriate box.

- physics -
**drwls**, Wednesday, April 6, 2011 at 6:34pm
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 -
**Cecilia**, Saturday, October 27, 2012 at 8:29pm
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.

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