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Problem: The motor of a crane uses power P to lift a steel beam. By what factor must the motor's power increase to lift the beam twice as high in half the time?

FREE Expert Solution

The power can be expressed as:

P=mght

(the work done against gravity divided by the time).

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Problem Details

The motor of a crane uses power P to lift a steel beam. By what factor must the motor's power increase to lift the beam twice as high in half the time?

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