A construction worker is carrying a load of 40 kilograms over his head and is walking at a constant velocity. If he travels a distance of 50 meters, how much work is being done?
work = force * distance = 40*9.81*50 J
To calculate the work done by the construction worker, we can use the formula:
Work = Force x Distance x cos(theta)
where:
- Force is the amount of force applied on the load
- Distance is the distance traveled by the construction worker
- theta is the angle between the force and the direction of motion
In this case, since the construction worker is carrying the load over his head, the force is acting vertically downward. The angle between the force and the direction of motion is 0 degrees, because the worker is moving in the same direction as the force. In this case, cos(0) = 1.
Therefore, the formula simplifies to:
Work = Force x Distance
Given that the load being carried is 40 kilograms and the distance traveled is 50 meters, we can substitute these values into the formula:
Work = 40 kg x 50 m
= 2000 kg·m
So, the work being done by the construction worker is 2000 kilogram-meters.