A weight lifter lits a 1250 pound barbell 2 meters in 3 seconds. How much power was used to lift the barbell
W=Fd
1250=F*2
Power to lift it=625
To calculate the power used to lift the barbell, we need to use the formula:
Power = Work / Time
The work done to lift an object is calculated by multiplying the force applied by the distance over which the force was applied. In this case, the force is equal to the weight, and the distance is given as 2 meters.
First, let's determine the work done to lift the barbell:
Work = Force × Distance
The force can be calculated by converting the weight from pounds to Newtons.
1 pound is approximately equal to 4.44822 Newtons.
Weight = 1250 pounds × 4.44822 Newtons/pound
Now we have the weight in Newtons. So,
Work = 1250 pounds × 4.44822 Newtons/pound × 2 meters
Now we can calculate the work done. Let's calculate it:
Work = 1250 × 4.44822 × 2 joules
Now that we have the work, we can calculate the power used to lift the barbell:
Power = Work / Time
Power = (1250 × 4.44822 × 2) joules / 3 seconds
By performing the calculation, you can find the amount of power used to lift the barbell.