Sunday, December 27, 2009

What is the power of a motor that can lift a 10kg object 12 m with a constant speed of .5m/s?

It's a physics questions. Here are the multiple choice possible answers. I have no idea how to do this.


A) 4.09 Watts


B)24.16 Watts


C) 49.05 Watts


D) 2.35 kiloWattsWhat is the power of a motor that can lift a 10kg object 12 m with a constant speed of .5m/s?
And the answer is ... C...





Power = Force(Distance)/Time





Force = 10 kg x 9.8 m/s*2


Distance = 12 m


Time = Distance/Speed = 24 sec

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