Question

Kelly lifts a 4500-newton barbell at a height of 7 meters. What are the joules of work being put out?

Pls help and fast <3

Answer 1

31,500 joules

Step-by-step explanation:

Work = force * distance * cos(theta)

Force = 4500N (weight of the barbell)

Distance = 7m (the height lifted)

Theta = 0 (cosine of 0 degrees is 1, since the force and distance are in the same direction)

So, Work = 4500 N * 7m * cos(0)

Work = 31,500 joules