How much work does a weightlifter do on a 450 N barbell thathe lifts 2m into the air
450 * 2 = 900 Joules
how did u get that ?
To calculate the amount of work a weightlifter does on a barbell, we use the formula:
Work = Force × Distance
In this case, the force is the weight of the barbell, which is given as 450 N (Newtons), and the distance is the height the barbell is lifted, which is 2 meters.
So, we can calculate the work as follows:
Work = 450 N × 2 m
= 900 J (Joules)
Therefore, the weightlifter does 900 Joules of work on the 450 N barbell when lifting it 2 meters into the air.