What hp strength would I need for an electric motor to lift 50 pounds?

Question

What hp strength would I need for an electric motor to lift 50 pounds?

Answer 1

How far and how fast?

For example; A 0.91 HP motor (assume 100% efficiency) can move 50 pounds one foot per second.

Answer 2

It depends on how fast.

1 horsepower is the power required to lift 550 lb 1 foot in 1 second.  If you gear it down to lift the weight in 2 seconds, you would only need 1/2 hp.

Answer 3

It all depends on how *fast* you want to lift the 50 pounds.

If you want to lift it at a rate of 1 foot per second, then you need approximately 0.1 HP.  

If you want to lift it at a rate of 10 feet per second, then you need approximately 1 HP (the exact number would be 0.909, but inefficiencies cause you to need more than the perfect physics dictates).

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