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Solution: What size of motor is required to lift 800 lbs in 40 seconds through 40 feet?

(Last Updated On: December 8, 2017)

What size of motor is required to lift 800 lbs in 40 seconds through 40 feet?

Problem Statement: ME Board October 1992

The time required for an elevator to lift a weight varies directly with the weight and the distance through which it is to be lifted and inversely as the power of the motor. If it takes 30 seconds for a 10 hp motor to lift 100 lbs through 50 feet, what size of motor is required to lift 800 lbs in 40 seconds through 40 feet?

Problem Answer:

The size of the motor is 48 horsepower.

Solution:

Solution: What size of motor is required to lift 800 lbs in 40 seconds through 40 feet?

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