a fork lift picks up a crate using 400 N. it moves the crate 20 meters in 50 seconds. how much power is used?
zero,ignoring friction. Why?
To calculate the power used by the forklift, we need to use the formula:
Power = Work / Time
First, we need to calculate the work done by the forklift. Work is given by the formula:
Work = Force * Distance
In this case, the force applied by the forklift is 400 N, and the distance moved is 20 meters. So, we have:
Work = 400 N * 20 m
Now, we can calculate the work done:
Work = 8000 N·m (Newton-meters) or Joules (J)
Next, we need to determine the time taken, which is given as 50 seconds.
Now, we can substitute the values into the power formula:
Power = Work / Time
Power = 8000 J / 50 s
Finally, we divide the work by the time to get the power used:
Power = 160 J/s or 160 Watts (W)
Therefore, the power used by the forklift to move the crate is 160 Watts.