Sounds about right.Pao44445 said:Homework Statement
Lifting a box (150 kg) up for 20 meters in 10 minutes, how much horsepower needed?
Homework Equations
1 Watts = 1 Joule/sec
1 Horsepower = 746 Watts
The Attempt at a Solution
I've figured this out but I got a very low horsepower :( about 0.065 hp, does it correct?
Horsepower is calculated by dividing the work done by an object in a given amount of time by the time it took to do that work. In this case, we would divide the work of lifting 150 kg for 20 m by the time of 10 minutes.
The formula for calculating horsepower is: horsepower = (force x distance) / time. In this case, the force would be the weight of 150 kg and the distance would be 20 m.
To calculate the horsepower needed, we would need to first convert 10 minutes to seconds (600 seconds). Then, using the formula above, we would plug in the values and get: horsepower = (150 kg x 20 m) / 600 seconds = 5 horsepower. Therefore, 5 horsepower would be needed to lift 150 kg for 20 m in 10 minutes.
Yes, horsepower can be converted to other units of power such as watts or kilowatts. To convert horsepower to watts, we would multiply the horsepower value by 746. To convert horsepower to kilowatts, we would divide the horsepower value by 1,000.
The accuracy of the calculated horsepower depends on the accuracy of the values used in the calculation. If the weight, distance, and time values are precise, then the calculated horsepower should also be precise. However, factors such as friction and inefficiencies in the lifting mechanism may affect the accuracy of the calculated horsepower.