A box that weighs 60N is lifted by a rope a distance of 10 meters straight up at constant speed. How much power is required to complete this task in 5 seconds?
What are your answer choices?
power = work/time = 60*10/5 = 150 Watts
To calculate the power required to lift the box, we need to use the formula:
Power = Work / Time
First, let's calculate the work done in lifting the box. Work is given by the formula:
Work = Force x Distance
In this case, the force is the weight of the box, which is 60 N, and the distance is 10 meters:
Work = 60 N x 10 m = 600 N·m
Next, we'll calculate the time taken to complete the task, which is given as 5 seconds.
Now, we can calculate the power:
Power = Work / Time = 600 N·m / 5 s = 120 watts
Therefore, 120 watts of power are required to complete this task in 5 seconds.